Disgrifiad
Disgrifiad o'r Eitem:"Research sponsored by the Federal Transit Administration in cooperation with the Transit Development Corporation."
"Transportation Research Board, National Research Council."
Disgrifiad Corfforoll:64 p. : ill. ; 28 cm.
Llyfryddiaeth:Includes bibliographical references (p. 64)
ISBN:0309057159
ISSN:1073-4872 ;