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022 _a0092-8240
040 _aRuMoBEN
_brus
_ercr
041 0 _aeng
245 1 0 _aVol. 31 No. 2
260 _c1969
773 1 8 _7nnas
_gVol. 31 No. 2
_tBulletin of Mathematical Biology. 1969
_w000015352
_x0092-8240
942 _cIS
999 _c15387
_d15387