TY - BOOK AU - Ritchie,Gary A. TI - New agricultural crops T2 - AAAS selected symposium ; 38 SN - 0891584730 AV - SB107 .N48 U1 - 630 PY - 1979/// CY - Boulder, Colo. PB - Published by Westview Press for the American Association for the Advancement of Science, Washington, D.C. KW - Crops KW - Botany, Economic KW - Plant introduction N1 - Includes bibliographical references ER -