共 8 条
[1]
[Anonymous], 1970, Classification of occupations
[3]
COLLEY JRT, 1970, 3 P INT S BRONCH, P8
[4]
HOLLAND W W, 1969, Milbank Memorial Fund Quarterly, V47, P215, DOI 10.2307/3349262
[5]
PREDICTIVE VALUE OF A POSTAL QUESTIONNAIRE ON CARDIO-RESPIRATORY SYMPTOMS
[J].
JOURNAL OF CHRONIC DISEASES,
1970, 23 (5-6)
:411-+
[6]
NORMANTAYLOR W, 1972, COMMUNITY MED, V128, P32
[7]
TODD GF, 1972, STATISTICS SMOKING U
[8]
1972, CLASSIFICATION OCCUP