Não informado. (1950). American fertilizer and allied chemicals. Meister Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. American Fertilizer and Allied Chemicals. Willoughby, Ohio: Meister Publishing, 1950.
Lua MLA (8ú heag.)Não informado. American Fertilizer and Allied Chemicals. Meister Publishing, 1950.
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