Não informado. (1938). Gradwohl laboratory digest. International Society of Clinical Laboratory Technologists.
Lua i Stíl Chicago (17ú heag.)Não informado. Gradwohl Laboratory Digest. Saint Louis, Mo: International Society of Clinical Laboratory Technologists, 1938.
Lua MLA (8ú heag.)Não informado. Gradwohl Laboratory Digest. International Society of Clinical Laboratory Technologists, 1938.
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