000 00296nam a2200109Ia 4500
008 210804s1969||||xx |||||||||||||| ||und||
041 _aeng
245 0 _aCholera immunology
_breport of a who scientific group
260 _aGeneva
_bWorl health organisation (who)
_c1969
300 _a21
942 _cBK
999 _c12726
_d12726