000 00314nam a2200109Ia 4500
008 210804s1988||||xx |||||||||||||| ||und||
041 _aeng
245 0 _aRheumatic fever and rheumatic heart disease
_breport of who study group
260 _aGeneva
_bWorl health organisation (who)
_c1988
300 _a58
942 _cBK
999 _c12732
_d12732