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PLASTIC TOYS: : ENVIRONMENTAL POLLUTION AND HUMAN HEALTH RISKS

89-98 | | Open Access


DIRECT COMMUNICATION CHANNELS BETWEEN THE ENTREPRENEUR: AGRO-INDUSTRY CANTON QUEVEDO: AGRO-INDUSTRY CANTON QUEVEDO

104-124 | | Open Access


Evaluation of the phytotoxicity of commercial organic fertilizers using seeds of lettuce (Lactuca sativa L.) and cucumber (Cucumis sativus)

1-11 | | Open Access


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