Singh, R.P <br/><br/>
Sustainable agriculture :  Issues, perspectives and prospects in semi arid tropics / 
Ed. by R.P. Singh 
 - New Delhi  Indian Society of Agronomy  1990 
 - v, 492p;pbk 
<br/><br/> V.1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics<br/>Agricultural economics<br/>Sustainable development--Agriculture<br/>Agriculture and state--India
<br/><br/><label>Dewey Class. No.: </label>631  / ISA