Crop productivity - research imperatives revisited :  an international conference held at Boyne Highlands Inn, Harbor Springs, Michigan, October 11-13, 1985 / 
editors: Martin Gibbs, Clara Carlson. 
 - [n.p]:  [n.s],  [1985] 
 - x, 304p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural productivity.