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MLA

Pennington, L.H. "Relation of Weather Conditions to the Spread of White Pine Blister Rust In the Pacific Northwest." , 593-607.. Print

APA

Pennington, L. (0000). Relation of Weather Conditions to the Spread of White Pine Blister Rust in the Pacific Northwest.

Chicago

Pennington, L.H. "Relation of Weather Conditions to the Spread of White Pine Blister Rust in the Pacific Northwest" (1925): 593-607..