Não informado. (1940). Current review of agricultural conditions in Canada. Department of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Current Review of Agricultural Conditions in Canada. Ottawa: Department of Agriculture, 1940.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Current Review of Agricultural Conditions in Canada. Department of Agriculture, 1940.
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