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MLA

Steinberg, Robert A. "Sulfur and Trace-element Nutrition of Aspergillus Niger." , 109-127.. Print

APA

Steinberg, R. A. (0000). Sulfur and Trace-Element Nutrition of Aspergillus niger.

Chicago

Steinberg, Robert A. "Sulfur and Trace-Element Nutrition of Aspergillus niger" (1941): 109-127..