Não informado. (1955). Commercial fertilizer and plant food industry. W.W. Brown Publishing.
Citace podle Chicago (17th ed.)Não informado. Commercial Fertilizer and Plant Food Industry. Atlanta, Ga: W.W. Brown Publishing, 1955.
Citace podle MLA (8th ed.)Não informado. Commercial Fertilizer and Plant Food Industry. W.W. Brown Publishing, 1955.
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