弹药
发表于 2025-3-26 22:40:59
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endoscopy
发表于 2025-3-27 03:36:54
Palgrave Macmillan, a division of Macmillan Publishers Limited 1998
怒目而视
发表于 2025-3-27 07:08:35
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concise
发表于 2025-3-27 11:58:51
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Ganglion-Cyst
发表于 2025-3-27 14:25:29
Roaa H. Ismael,Ahmed A. Al-Obaidi to the development of agriculture. The more rational the use of resources, the higher their productivity. Therefore, rationalization of agricultural resource use can be seen as one of the major ways to develop agriculture. The rationalization of land use seems easily understandable, especially in a
CURT
发表于 2025-3-27 17:56:31
Collapse Mechanism of Gypsified Sandy Soilcapital input or both per unit of cultivated land. The intensification of farming is not equal to the involution of farming. Intensification can result in a rise in productivity, either of land or of labour; however, involution can also result in a rise in land productivity but only at the cost of f
核心
发表于 2025-3-28 00:16:54
Ayad A. O. Al-Shiblawi,Hatem K. Breesam production in that region. In contrast, if it can gain resources from outside and its products are sold elsewhere, then the scale of production can more easily be expanded to a higher level. I call the former situation an ‘internal’ pattern of development and the latter an ‘external’ pattern of dev
transient-pain
发表于 2025-3-28 05:09:49
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PTCA635
发表于 2025-3-28 08:30:42
https://doi.org/10.1007/978-3-031-62648-7r force in the family consists of a man and a woman, we will first make a close study of the problem of labour productivity of each and then discuss the problem of labour productivity of the family as a whole. Before this we will discuss labour productivity in general in pre-modern Jiangnan.
向外才掩饰
发表于 2025-3-28 13:34:33
https://doi.org/10.1007/978-3-031-62648-7d Qing times. While there, I also took the opportunity to visit some outlying villages. Then, in the winter of 1994, I returned to this county to attend a conference on Chinese agricultural history and again visited some villages. The changes I saw were so stunning that I could scarcely believe my e