adipose-tissue
发表于 2025-3-27 00:52:26
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MITE
发表于 2025-3-27 03:44:52
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PRO
发表于 2025-3-27 05:29:34
Studies in Systems, Decision and ControlThe vegetation sciences, or an appreciation of botany and ecology in their widest aspects, are considered as the essential basis for economic land management and plant and animal husbandry in the tropical grazing lands.
最高峰
发表于 2025-3-27 12:44:35
https://doi.org/10.1007/978-3-030-65584-6Throughout the world, agricultural zones are determined mainly by their climate and the stage of their economic development. However, an initial survey of farming regions in the tropics can use the climatic factor alone: since in these lower latitudes there are, so far, only developing countries whose economies do not differ greatly.
CALL
发表于 2025-3-27 16:43:01
Sherif M. Abuelenin,Adel Y. Abul-MagdThe North American Great Plains extends from 24°N to 52°N, for a distance of about 3300 km, and from 100°W to the Rocky Mountain range, a distance of about 450 km. The great Plains encompass an area of approximately 2.5 million km. which presently produce large amounts of cereal grains and support large herds of cattle.
控诉
发表于 2025-3-27 18:58:42
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Pastry
发表于 2025-3-28 01:59:53
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多骨
发表于 2025-3-28 05:52:36
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清晰
发表于 2025-3-28 07:50:30
Handbook of Vegetation Sciencehttp://image.papertrans.cn/a/image/159192.jpg
经典
发表于 2025-3-28 12:44:46
Emerging Technologies for Battling Covid-19hrub steppes, the main source of subsistence is domestic livestock husbandry (Rattray, 1960). Although this type of husbandry occupies such an important place in the economy of most African countries, little progress has been made in establishing scientifically based management programmes or even in