R.S LOOMIS/ D.J. CONNOR <br/><br/>
CROP ECLOGY: PRODUCTIVITY AND MANAGEMENT IN AGRICULTURAL SYSTEMS 

 - NEW YORK  CAMBRIDGE UNIVRSITY PRESS  1992 
 - XIV,538PG ILLUS  HBK 
<br/><br/><label>ISBN: </label>05213879 X 
<br/><br/><label>LC Class. No.: </label>S 589.7 .L66