This is a summary of selected contracts awarded by the federal government to companies and other vendors in Virginia, Maryland and the District.

Vitro Corp. in Silver Spring won a $30,095,049 contract from the Strategic Systems Program Office to provide engineering services for the Trident missile program.

Zenith Data Systems in Vienna won a $21,994,579 contract from the Air Force to supply computer equipment.

Johns Hopkins University in Laurel won an $18,434,578 contract from the Space and Naval Warfare Systems Command to provide research, development, engineering and technical services.

Allied-Signal Aerospace Co. in Baltimore won an $11,575,785 contract from the Navy to provide technical services.

Bendi Field Engineering Report in Columbia, Md., won an $2,977,039 increment as part of a $13,134,552 contract from the Defense Nuclear Agency to manage and operate government facilities.

Superior Marine Inc. in Portsmouth, Va., won a $2,915,205 contract from the Navy to provide maintenance and repair of equipment.

National Industries for the Blind in Alexandria won a $968,402 contract from the General Services Administration to supply pillows.

Tidewater Construction Corp. in Norfolk won a $935,000 contract from the U.S. Coast Guard to construct offshore navigation towers.

Booz-Allen & Hamilton in Bethesda won a $924,967 contract from the Navy to provide engineering, technical and analytical services.

C.B.C. Enterprises Inc. in Norfolk won an $866,000 contract from the Navy to replace roofing on housing units at Virginia Beach.

Stamp Venturers in Fairfax won an $863,800 contract from the U.S. Postal Service to provide intaglio stamps.

Andrulis Research Corp. in Bethesda won an $826,433 contract from the Army to provide administrative and technical services.

Heckler & Koch Inc. in Sterling, Va., won a $730,136 contract from the Bureau of Alcohol, Tobacco and Firearms to provide tactical carbines.

GEMMA Corp. in Arlington won a $697,995 contract from the Navy to provide technical, scientific and engineering evaluations.

Current Computer Corp. in Rockville won a $596,344 contract from the Navy to communications equipment.

EMS Inc. in Springfield won a $550,000 contract from the Navy for repair work.

Armada/Hoffler Construction Co. in Chesapeake, Va., won a $516,000 contract from the U.S. Fish and Wildlife Service to provide a visitors center building.

Statcom Inc. in McLean won a $413,657 contract from the Navy to provide technical program evaluations and services.

3M Rikder in Washington won a $406,060 contract from the Department of Veterans Affairs marketing center to provide pharmaceuticals.

Perimeter Access Systems in Pasadena, Md., won a $400,000 contract from the General Services Administration to provide alarm and signal systems.

TRW Inc. in Fairfax won a $390,000 contract from the Army to provide communications equipment.

Charles G. Marshall Inc. in Clinton, Md., won a $327,000 contract from the Navy to install air compressors.

Computer Systems Development Corp. in Chantilly won contracts totaling $291,614 from the Navy to provide analytical and technical services.

National Industries for the Blind in Alexandria won a $285,880 contract from the General Services Administration to provide squeegees and vinyl sponges.

R.O.W. Sciences Inc. in Rockville won a $285,280 contract from the Air Force to provide animal husbandry services.

IMS Inc. in Rockville won a $207,699 contract from the Navy to provide computer systems development.

CRC Systems Inc. in Fairfax won a $201,004 contract from the Environmental Protection Agency to provide documents for imported vehicles and computer programming.

Ronald Hsu Construction Co. in Capitol Heights won a $188,500 contract from the Walter Reed Army Medical Center to replace stairwell treads and risers.

Rail Co. in Towson, Md., won a $150,193 contract from the Navy to provide independent analysis and technical studies.

National Industries for the Severely Handicapped in Vienna won a $149,360 contract from the General Services Administration to supply tablecloths.

Metters Industries Inc. in Arlington won a $139,663 contract from the Navy to provide technical and financial services.

Rail Co. in Towson, Md., won a $118,344 contract from the Navy to provide engineering and technical services.

Sleepeck Printing Corp. in Fairfax won a $118,250 contract from the U.S. Government Printing Office for printing services.

Exide Corp. in Columbia, Md., won a $114,312 contract from the Defense General Supply Center to provide storage batteries.

Victory Van Corp. in Alexandria won a $114,101 contract from the General Services Administration to provide transportation and moving services.

S&S Graphics in Rockville won a $113,510 contract from the U.S. Government Printing Office to provide printing services.

Motorola Inc. in Landover won a $111,854 contract from the Air Force to maintain and repair land mobile radios at Andrews Air Force Base.

Automated Sciences Group Inc. in Silver Spring won a $100,000 contract from the Navy to provide architectural and engineering services.