of;
Resources;
and;
Environment,;
Henan;
University;
of;
Economics;
and;
Law,;
Zhengzhou;
450046,;
China;
Collaborative;
Innovation;
Center;
for;
Coordinating;
Industrialization,;
Urbanization;
and;
Agriculture;
Modernization;
inCentral;
Economic;
Zone,;
Zhengzhou;
450046,;
China;
of;
Environment;
and;
Planning,;
Henan;
University,;
Kaifeng;
475004,;
China;
就业去向; 农民工; 目的地; 河南省; 经济发展水平; 外来务工人员; 中国; 分层抽样;