Economic model for the maintenance of traffic signals /

Bibliographic Details
Main Author:	Smith, Thorold G.
Other Authors:	Oppenlander, J. C.
Format:	Book
Language:	English
Published:	Lafayette, Ind. : Purdue University, 1968.
Series:	Technical paper (Joint Highway Research Project (Ind.)) ; no. 4. Joint Highway Research Project (Ind.) (Series) ; no. 68-4.
Subjects:	Traffic signs and signals. Traffic signs and signals > Indiana.

Description
Item Description:	"Joint Highway Research Project, project C-35-17DD, file 8-4-30."
Physical Description:	ii, 59 leaves : illustrations ; 28 cm.
Bibliography:	Bibliography: leaf 59.