Economic evaluation of investments in agricultural penetration roads in developing countries 
Shaner, Willis W. 
 - Washington  The world bank  1966 
 - 312 p. :  ill, ;  24 cm. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE
<br/><br/><label>Dewey Class. No.: </label>338.9  / SHA