text University Park, Pennsylvania State University Press Ind 578 p. ill.; 23 cm. 578 p. ill.; 23 cm. EASTER SCHOOL IN AGRICULTURAL SCIENCE (19 th : 1972 : University of Nattingham) SEEDS ECOLOGY CONGRESSES 582.4 INLIS000000000003260 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)