D D Perkins

INFRASTRUCTURE INVENTORIES - THE STARTING POINT FOR EFFECTIVE HIGHWAY MANAGEMENT

K Opiela, D D Perkins, 1986 .

A DECISION SUPPORT SYSTEM FOR FREEWAY CORRIDOR ANALYSIS

D D Perkins, R C Pfefer, 1987 .

DEVELOPMENT OF A MICROCOMPUTER-BASED TRANSPORTATION INFORMATION SYSTEM FOR LOCAL AGENCIES. SESSION I

K S Opiela, D D Perkins, 1984 .

Perspectives Anecdotal , Historical and Critical Commentaries on Genetics

D D Perkins, D. D. Perkins, F. James, 2002 .