Physiology of tree crops : proceedings of a symposium held at Long Ashton Research Station, University of Bristol, 25-28 March 1969 / edited by L. C. Luckwill and C. V. Cutting. Long Ashton Symposium (2nd : 1969) Luckwill, Leonard C., ed. Cutting, C. V., ed. Long Ashton Research Station. Tree crops Physiology Congresses. QK711.2 .L65 1969 581.13345 LUP Includes bibliographical references and index. London ; New York : Academic Press, 1970. 1970. 1970 Text xiii, 382 p. : eng