Pear Psylla in Ontario Pear Orchards
Subtitle: Pest Management Program For Pears Series.
Contributors: Ker, Kevin W.
Edition: Rev.
Series: Factsheet (Ontario. Ministry of Agriculture and Food)
Publisher: s.n
Published: 1990
Place of publication: S.l
Language: eng
Notes: Revision of Factsheet "Pear Psylla in Ontario Pear Orchards," March 1982

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