Appraisal of a Highway Maintenance Project : Republic of Mali. - Washington D. C. : World Bank (WB) , 1970 - various pages : ill. ; 28 cm. - Report, no. PTR-52a . Includes bibliographical references. Subjects--Topical Terms: Highway Maintenance Project--Republic of Mali Gov. Doc. Class. No.: UN WB IDA R-PTR-52a