Plant environment and efficient water use. Edited by W. H. Pierre [and others]. Pierre, W. H. (William Henry), 1898- ed. Iowa Agriculture and Home Economics Experiment Station. Plants Water requirements. Water conservation. QK871 .P5 581.5/222 PIP "Papers ... presented in a symposium sponsored by the Agricultural Experiment Station of Iowa State University [and others]" Madison, Wis., American Society of Agronomy 1966 1966 1966 Text xii, 295 p. eng