Author Results for 郑庆学

占学德，郑庆良，杨莹编著
郑庆学主编
魏金奎，郑庆学主编

1
开滦矿区防治水实践

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Main Authors: 郑庆学 (郑庆学主编)
Published: 煤炭工业出版社
Publication Dates: 2018
Call Number: TD745/8809
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2
构建煤矿员工安全行为管控体系

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Main Authors: 魏金奎 (魏金奎，郑庆学主编); 郑庆学
Published: 煤炭工业出版社
Publication Dates: 2013
Call Number: TD7/2484
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3
会计信息系统

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Main Authors: 占学德 (占学德，郑庆良，杨莹编著); 郑庆良; 杨莹
Published: 高等教育出版社
Publication Dates: 2007
Call Number: F232/2692
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