000 00361nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aMorgan, J.
245 _aMorphology and antomy of american species of the cenus psaronius
260 _aUrbana
_c1959
300 _a1-108 p.
440 _aIllinois Biological Monograph
901 _a63518
942 _cB
_2udc
999 _c10274
_d10274