American Public Health Association. (1992). Standard methods: For the examination of water and wastewater. Washington DC: American Public Health Association.
শিকাগো স্টাইলে সাইটেশনAmerican Public Health Association. Standard Methods: For the Examination of Water and Wastewater. Washington DC: American Public Health Association, 1992.
এমএলএ সাইটেশনAmerican Public Health Association. Standard Methods: For the Examination of Water and Wastewater. Washington DC: American Public Health Association, 1992.
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