[Survey on occupational disease hazards for farmer-workers in Guangzhou].
He
Jian-min
JM
Liu
Shi-qi
SQ
Liu
Yi-min
YM
D002681:China; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D009784:Occupational Diseases / Q000517:prevention & control; D016273:Occupational Exposure / Q000517:prevention & control; D016272:Occupational Health / Q000706:statistics & numerical data*; D012424:Rural Population / Q000706:statistics & numerical data*