Welch, P. S. (2009). Limnological methods. Narendra Pub..
Chicago-čujuhus (17. p.)Welch, Paul S. Limnological Methods. Delhi: Narendra Pub., 2009.
MLA-čujuhus (9. p.)Welch, Paul S. Limnological Methods. Narendra Pub., 2009.
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