Rao, K. S. (1992). Fresh-water ecology (Bryozoa). Anmol Publ..
Tohutoru Kātū Chicago (17th ed.)Rao, K. S. Fresh-water Ecology (Bryozoa). New Delhi: Anmol Publ., 1992.
Tohutoro MLA (9th ed.)Rao, K. S. Fresh-water Ecology (Bryozoa). Anmol Publ., 1992.
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