00000nam 2200000za 4500 9.806751 CaOODSP 20241203113639 cr ||||||||||| 151210s1993 bcc |o f|0| 0 eng d CaOODSP eng n-cn--- En4-269/1993E-PDF Guidelines for monitoring benthos in freshwater environments [electronic resource]. Vancouver : Environment Canada, 1993. vii, 81 p. : ill., figs., tables. "January 1993." Includes bibliographic references. gccst Fresh water gccst Environment management gccst Guidelines Canada. Environment Canada. PDF 761 KB https://publications.gc.ca/collections/collection_2015/ec/En4-269-1993-eng.pdf