Ogunfowora, Olabisi <br/><br/>
Derived resource demand, product supply and farm policy in the North Central State of Nigeria 
Olabisi Ogunfowora 
 - Iowa  Iowa State University Press  1972 
 - iv, 129 leaves: diagrs., tables 
<br/><br/> Ann Arbor: University Microfilms, 1975 Bibliography: leaves 119-123