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How to distinguish between old and new egg masses of the western spruce budworm

Author: Daniel B Twardus; V M Carolin; United States. Forest Service.; United States. Cooperative State Research Service.; Canada/United States Spruce Budworms Program.
Publisher: [Washington, D.C.] : U.S. Dept. of Agriculture, Forest Service : U.S. Dept. of Agriculture, Cooperative State Research Service, [1984]
Series: Spruce budworms handbook.; Agriculture handbook (United States. Department of Agriculture), no. 623.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Database:WorldCat
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Additional Physical Format: Online version:
Twardus, Daniel B.
How to distinguish between old and new egg masses of the western spruce budworm.
[Washington, D.C.] : U.S. Dept. of Agriculture, Forest Service : U.S. Dept. of Agriculture, Cooperative State Research Service, [1984]
(OCoLC)610200480
Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: Daniel B Twardus; V M Carolin; United States. Forest Service.; United States. Cooperative State Research Service.; Canada/United States Spruce Budworms Program.
OCLC Number: 11419254
Notes: Cover title.
"CANUSA, Canada United States Spruce Budworms Program"--Page 2.
"May 1984"--Page 2.
Description: 7 pages : color illustrations ; 22 cm.
Series Title: Spruce budworms handbook.; Agriculture handbook (United States. Department of Agriculture), no. 623.
Responsibility: [by Daniel B. Twardus and V.M. Carolin].
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