共 21 条
[1]
ASHFORD JR, 1961, BRIT J PREV SOC MED, V15, P106
[2]
BOWER G, 1961, AM REV RESPIR DIS, V83, P684
[3]
DIXON WJ, 1957, INTRO STATISTICAL AN, P38
[4]
DIXON WJ, 1957, INTRODUCTION STATIST, P121
[5]
DIXON WJ, 1957, INTRO STATISTICAL AN, P122
[7]
FAIRBAIRN A S, 1959, Br J Prev Soc Med, V13, P175
[8]
FERRIS BG, 1962, AM REV RESPIR DIS, V86, P165
[9]
THE SIGNIFICANCE OF RESPIRATORY SYMPTOMS AND THE DIAGNOSIS OF CHRONIC BRONCHITIS IN A WORKING POPULATION
[J].
BMJ-BRITISH MEDICAL JOURNAL,
1959, 2 (AUG29)
:257-258