000 00602nad a22001577a 4500
008 120525s1951 -us||||| |||| 00| 0 eng d
041 _aeng
100 1 _aWichterman, Ralph
245 1 4 _aThe ecology, cultivation, structural characteristics and mating types of Paramecium calkinsi /
_cRalph Wichterman
260 _a[S.l. :
_bs.n.],
_c1951
300 _a51-65 p. :
_bill. ;
_c26 cm
440 1 _aProceedings of the Pennsylvania academy of science ;
_v25
500 _aTav. di studio SZN
760 _06880
_96880
_tCiliata. Sistematica, Morfologia, Fisiologia e Radiobiologia.
_w6880
942 _2ddc
_cPM
999 _c46091
_d46091