The oyster-shell scale (Lepidosaphes ulmi Linn.)
By: [R.C. Treherne].
Contributors: British Columbia. Horticultural Branch.
Series: CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 83839; Circular -- no. 41.
Publisher: W.H. Cullin
Published: 1997
Place of publication: Victoria, B.C
Language: eng
Format: Microform
Subjects: Fruit -- Diseases and pests -- British Columbia.; Oyster-shell scale.; Agricultural pests -- British Columbia.
Notes: "... prepared by R.C. Treherne ..."--p. 3.

Caption title.

At head of title: Province of British Columbia. Department of Agriculture (Horticultural Branch)

Original issued in series: Circular. New horticultural series / British Columbia. Horitucltural Branch ; no. 41.

Filmed from a copy of the original publication held by Agriculture Canada, Canadian Agriculture Library, Ottawa. Ottawa : Canadian Institute for Historical Microreproductions, 1997.

3 p. : ill. ; 23 cm.