Search Constraints
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Creator
Schroeder, R. K.
Remove constraint Creator: Schroeder, R. K.
Resource Type
Conference Proceeding
Remove constraint Resource Type: Conference Proceeding
Subject
Agricultural pests -- Control -- Congresses
Remove constraint Subject: Agricultural pests -- Control -- Congresses
Subject
Pears -- Diseases and pests
Remove constraint Subject: Pears -- Diseases and pests