共 17 条
- [1] [Anonymous], 1980, Bull World Health Organ, V58, P183
- [4] BUTZLER JP, 1979, CLIN GASTROENTEROL, V8, P737
- [5] *CTR DIS CONT, 1977, 1976 FOODB WAT DIS A
- [6] *CTR DIS CONTR, 1979, 1977 FOODB WAT DIS A
- [7] *CTR DIS CONTR, 1981, 1979 FOODB DIS AUTBR
- [8] *CTR DIS CONTR, 1980, 1978 WAT REL DIS AUT
- [9] *CTR DIS CONTR, 1981, 1979 WAT REL DIS AUT