The pear psylla in California
By: Harold F. Madsen, Robert L. Sisson, Richard S. Bethell
Contributors: Sisson, Robert L., 1923-2005; Bethell, Richard S.
Series: Circular / University of California, College of Agriculture, Agricultural Experiment Station -- 510; Circular (California Agricultural Experiment Station) -- 510.
Publisher: Division of Agricultural Sciences, University of California
Published: 1962
Place of publication: [Berkeley, Calif.]
Language: eng
Number of pages: 10
Subjects: Diseases and pests; Pear; Psylla