00321nam a2200109Ia 4500008004100000082004200041100002200083245003400105260004200139300001000181650002000191140113s9999    xx            000 0 und d  a"576.8:577.472(28)""1969""(082.2) L7"  a"Cairns, John Jr"  aAquatic microbial communities  b"New York : Garland publishing, 1977"  a695p.  aAquatic microbs