| 000 | 00370 am a2200121 a 4500 | ||
|---|---|---|---|
| 100 | 1 | _aSawyer, R.T. | |
| 245 | 1 | _aNorth American freshwater leeches, exclusive of the piscicolidae, with a key to all species | |
| 260 |
_aIllinois _c1972 |
||
| 300 | _a1-154 p. | ||
| 942 |
_2udc _cB |
||
| 440 | _aFreshwater, Species Illinois Biological Monographs No. 46 | ||
| 901 | _aS20506 | ||
| 999 |
_c109026 _d109026 |
||