Proyeccion economica de la jornada semanaria de cuarenta horas
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| Format: | Tesis de licenciatura |
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México
1974
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| Online Access: | https://hdl.handle.net/20.500.14330/TES01000119857 https://tesiunamdocumentos.dgb.unam.mx/pmig2019/0119857/Index.html |