Pizzi, N. G. (2006). Filter operations field guide. American Water Works Association.
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Chicago-čujuhus (17. p.)
Pizzi, Nicholas G. Filter Operations Field Guide. Denver, CO: American Water Works Association, 2006.
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MLA-čujuhus (9. p.)
Pizzi, Nicholas G. Filter Operations Field Guide. American Water Works Association, 2006.
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