Franson, M. A. H. (1992). Standard methods: For the examination of water and waste water (18.).
Παραπομπή Chicago StyleFranson, Mary Ann H. Standard Methods: For the Examination of Water and Waste Water. 18. American Public Health Association, 1992.
Παραπομπή MLAFranson, Mary Ann H. Standard Methods: For the Examination of Water and Waste Water. 18. 1992.
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