共 15 条
- [2] Breslow NE., 1980, STAT METHOD CANC RES, V1, P248
- [3] Craun G F, 1986, Lancet, V2, P513
- [5] JAKUBOWSKI W, 1978, J AM WATER WORKS ASS, V70, P702
- [7] KISH L, 1965, SURVEY SAMPLING, P113
- [9] Mead GH., 1936, SOCIAL PSYCHOL SELEC
- [10] MENDENHALL W, 1979, ELEMENTARY SURVEY SA, P137