A Bibliography of Psylla (Homoptera: Psyllidae) on pear trees.
Contributors: United States. Science and Education Administration.
Series: Bibliographies and literature of agriculture ;; no. 17
Publisher: U.S. Dept. of Agriculture, Science and Education Administration
Published: 1981
Place of publication: Washington, D.C
Language: eng
Number of pages: 13
Subjects: Psylla -- Bibliography.; Pear -- Diseases and pests -- Bibliography.
Notes: "Issued August 1981"--T.p. verso.