Michael, R. (1989). The Bench sheet monograph on activated sludge microbiology. Alexandria, VA.: The Water Pollution Control Federation.
Παραπομπή Chicago StyleMichael, Richard. The Bench Sheet Monograph On Activated Sludge Microbiology. Alexandria, VA.: The Water Pollution Control Federation, 1989.
Παραπομπή MLAMichael, Richard. The Bench Sheet Monograph On Activated Sludge Microbiology. Alexandria, VA.: The Water Pollution Control Federation, 1989.
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