Text ( visual ) : unmediatedThe pear thrips / by E.O. Essig. -- [Berkeley] : University of California, College of Agriculture, Agricultural Experiment Station , 1920. -- 9 p. : ill. ; 24 cm. -- (Circular / College of Agriculture, Agricultural Experiment Station, University of California ; no. 223). -- Caption title ; Includes bibliographical references. -- (BB1825400X) ; http://ci.nii.ac.jp/ncid/BB1825400X
Author Heading(s): Essig, E. O. (Edward Oliver)