00276nam a2200097Ia 4500008004100000082001400041100002400055245004500079260004400124300001000168140113s9999    xx            000 0 und d  a595.77 J9  a" Vockeroth, J. R."  aA revision of the genera of the syrphini  b"Entomological society of Canada, 1969"  a176p.