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  • PMID:32031360 求助时间:2021/5/13 8:34:49
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  • https://doi.org/10.1016/j.jretconser.2021.102574 求助时间:2021/5/12 17:10:40
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  • The collected writings of John Maynard Keynes 求助时间:2021/5/12 17:10:40
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  • doi: 10.2174/1871520617666170719152349 求助时间:2021/5/12 17:10:40
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  • DOI:10.1016/J.CHAOS.2021.110711 求助时间:2021/5/12 17:10:40
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  • https://doi.org/10.1016/j.ecolind.2021.107454 求助时间:2021/5/12 17:10:40
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  • The present situation of pesticide residues in China and their removal and transformation during food processing 求助时间:2021/5/12 17:10:40
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  • DOI:10.1016/J.AAP.2020.105968 求助时间:2021/5/12 17:10:40
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  • Quantitative comparison on the difficulty of manual books used in Chinese and Romanian primary schools———Based on the Bao’s Difficulty Model 作者: Xiaoying Feng; Loan Neacsu [J]Frontier of Higher Education DOI: 10.36012/fhe.v2i1.1568 求助时间:2021/5/12 17:10:40
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  • DOI: 10.1016/j.rser.2021.110802 求助时间:2021/5/12 17:10:40
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