无政府主义者 发表于 2025-3-23 10:25:50
http://reply.papertrans.cn/44/4305/430462/430462_11.png背信 发表于 2025-3-23 15:31:27
László Godapursuits and biological ‘conservation’ is investigated it is essential to derive a recreation classification (Burton, 1967). Discussing the demand for recreation, Burton postulates three types of pursuits, as detailed in Table 9.1. It is clear that, whilst the third category is essentially associatePLUMP 发表于 2025-3-23 21:29:19
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http://reply.papertrans.cn/44/4305/430462/430462_14.pnginsolence 发表于 2025-3-24 06:18:50
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http://reply.papertrans.cn/44/4305/430462/430462_18.png鞭打 发表于 2025-3-24 21:22:32
Danube River Basin Coding,se. An analysis of the systems used in the Danube basin countries is presented and a system developed in Germany is adopted for coding of Danube River Basin. The coding system is derived up to the third level of the watershed for which all major tributaries of the Danube River are given a unique cod去掉 发表于 2025-3-24 23:25:21
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