na INLIS000000000003959 Inggris 0010-0721000019 Introduction to plant pathology Frederick Deforest Heald Heald , Frederick Deforest 2nd ed. New York McGraw-Hill 1943 xii, 603 p.: Index 24 cm. 632 HEA i 632 PLANT PATHOLOGY PARASITOSES VIROSES 690/68