000 00273nam a2200121Ia 4500
008 190415s9999 xx 000 0 und d
082 _aRK.003;
100 _aKatti, A.P.
245 0 _aFollow-up study of sterilised males
260 _c1970
300 _a46p.
942 _cBK
999 _c14244
_d14244