Παραπομπή APA

(1998). Biological and chemical systems for nutrient removal: A special publication. Alexandria, VA.: Water Environment Federation.

Παραπομπή Chicago Style

Biological and Chemical Systems for Nutrient Removal: A Special Publication. Alexandria, VA.: Water Environment Federation, 1998.

Παραπομπή MLA

Biological and Chemical Systems for Nutrient Removal: A Special Publication. Alexandria, VA.: Water Environment Federation, 1998.

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