00397nam a2200145Ia 4500008004100000020001500041082001600056100002200072245005400094260004000148300000800188650001800196650001800214653001900232170901s1975    xx            000 0 und d  a0471995576  a574.92bUIH  aUhlmann, Dietrich 0aHydrobiologybA text for engineers and scientists  aNew YorkbJohn Wiley and Sonsc1975  a311  aLife sciences  aPure Sciences  aMarine biology