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H. E. Ewing
Identifiers
Open Library
OL4504278A
Top Subjects
Tetranychus telarius (1)
Parasites. (1)
Poultry -- Parasites -- Oregon (1)
Books by H. E. Ewing
Total count: 3
The common red spider or spider mite
Oregon Agricultural College Experiment Station
1914-01-01
A manual of external parasites
C.C. Thomas
1929-01-01
Some external parasites of poultry
Oregon Agricultural College, Extension Service
