Dance Posters, by Eleanor Rachel Luger (Simon and Schuster, $6.95). An strikingly designed 13" X 9 1/2" book, this colorful potpourri of reproduced posters invites benignant mutilation. The companies and performances represented cover a broad spectrum: experimental, Spanish, classical ballet, modern dance; even Capezio and Danskin are here, while Ben Shahn and Edward Gorey are two of the better-known artists.

Days With Ulanova: An Intimate Portrait of the Legendary Russian Ballerina, by Albert E. Kahn (Fireside, $6.95). This large-format book is basically an appreciation of the life and work of the famous Bolshoi ballerina who made her debut at the Mariinsky Theatre in Leningrad in October, 1928. Ulanova, with a significant career as a dancer behind her, now teaches, helping the troupe's younger dancers to take on the roles which she once interpreted so eloquently. The book, with Kahn's countless photographs, seems at times an overly romantic rendition of a dancer's life, but dance buffs will find it interesting.

Starting Small in the Wilderness: The Sierra Club Outdoors Guide for Families, by Marlyn Doan and Bike Touring: The Sierra Club Guide to Outings on Wheels, by Raymond Bridge (Sierra Club, $6.95 each). As usual, the Sierra Club brings a comprehensive approach to the subject of venturing into the wilderness. Starting Small features all sorts of useful hints for trekking with kids in tow. There are even directions for making a child's sleeping bag. Bike Touring is meant for the older members of the family; it includes chapters on bike maintenance and repair, tour planning, even the fine points of "building a wheel." Useful bibliographies and lists of equipment suppliers are included in both volumes.

Happy All the Time, by Laurie Colwin (Pocket Books, $2.25). A deft and witty frolic of a novel about Guido and Vincent, two third cousins, who are also best friends, and their lovers, Holly and Misty, respectively. Fans of courtship stories in the Beatrice/Benedick vein will enjoy the rapid-fire dialogue with which Colwin serves up her tale of kindred spirits in the pursuit of happiness.

Your Children Need Music: A Guide for Parents and Teachers of Young Children, by Marvin Greenberg (Spectrum, $8.95). Out of the mouths of babes . . . come songs! Maybe you didn't realize it, but those earliest babbles have definite tonal and rhythmic patterns -- the young child's first forays into the world of music. Greenberg, focusing on newborns to 5-year-olds, suggests ways to teach simple songs, expand vocal range, and increase the child's pleasure in both listening to and performing music. This book is useful both for parents and for teachers of the very young.

Pure & Simple: Delicious Recipes for Additive-Free Cooking, by Marian Burros (Berkley, $2.95). Back to basics in the kitchen: Economy, nutrition, tastiness and safety are Burros' aims, and she especially eschews prepared "convenience foods." There's something for everyone in this excellent book -- from the busy cook who needs recipes which can be quickly prepared to the one willing to spend the extra time making baking mix from scratch in order to save money and cut out the additives. For the vegetarian, there's a whole raft of meatless main dishes and vegetable recipes, and even chocaholics can find nirvana -- with "Double Chocolate Treat."

Gas Savers Guide, from the editors of Consumer Guide, (Fawcett $1.95). Even if the filling-station lines have abated, this skinny (64 pages) but timely book offers advice worth heeding. It's divided into three sections: driving tips (some of which, like "don't go out of your way for fuel," seem obvious, while others, such as "think of a fresh egg," might not come readily to mind), maintenance and purchasing a new car. There's a blank mileage chart included, too, making it a sure contender for glove-compartment space.

Aupres de ma Blonde, by Nicholas Freeling (Vintage, $1.95). This story is the last adventure for Piet van der Valk, Amsterdam policeman and hero of previous Freeling novels; less than halfway through, his widow, a self-reliant Frenchwoman, becomes the protagonist, as her husband's colleagues seek his killer. Freeling writes an idiosyncratic sort of suspense; the characters speak their minds -- sometimes forthrightly, sometimes elliptically -- and the tension comes from the pace of the thought, not the action.

An Anthology of Modern Swedish Literature, by Per Wastberg (Cross-Cultural Communications, 239 Wynsum Avenue, Merrick, New York 11566, $15). (Although completed in 1975, the demise of this book's then-publishing house caused a delay until another could be found. Thus, Wastberg, taking the time lapse into account, apologizes for omitting those more recent writers who should have been included.) Fiction and non-fiction are represented, as well as poetry: Sweden has a huge domestic publishing industry; however, only a very small amount is bought for translation and sale in the English-speaking market. Wastberg does offer, though, a bibliography of works in English by these writers -- best known among whom are Jan Myrdal and, possibly, the film director Jorn Donner -- as well as others who might be of interest.

In the Life of a Romany Gypsy, by Manfri Frederick Wood (Routledge & Kegan Paul, $6.75). A memoir of Gypsy life by a member of one of the oldest Romany tribes in England. "Born in a tent, at the bottom of a beanfield somewhere in Kent," the author speaks of his family (a Gypsy's name can be different in different places -- his mother was known variously as Florence, Bertha, Annie and Flo; his grandfather, Thomas, Frederick, Elfrid and George) and of Gypsy life in general. He covers the superstitions of his people, their cookery, the language, history and social structure. For Gypsies, Wood says, "life is a hobby itself."