Rearing and release of Coccinellids for potential control of pear psylla.
Contributors: United States. Agricultural Research Service. Western Region.
Series: Advances in agricultural technology -- 20.
Publisher: Agricultural Research Service (Western Region), U.S. Dept. of Agriculture; Available from the Yakima Agricultural Research Laboratory
Published: 1981
Place of publication: Oakland, Calif; Yakima, Wa
Language: eng
Subjects: Ladybugs.; Pear -- Diseases and pests.; Psylla.
Notes: "September 1981."

Bibliography: p. 9.