00320nam a2200109Ia 4500008004100000082001700041100002400058245005500082260004400137300001000181650001900191140113s9999    xx            000 0 und d  a595.7(71) M7  a" Rosenberg, D. M."  aAquatic insects of peatlands and marshes in Canada  b"Entomological society of Canada, 1987"  a174p.  aAqatic insects