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・ World record progression track cycling – Men's 1 km time trial
・ World record progression track cycling – Men's flying 200 m time trial
・ World record progression track cycling – Men's flying 500 m time trial
・ World record progression track cycling – Men's individual pursuit
・ World record progression track cycling – Men's team pursuit
・ World record progression track cycling – Men's team sprint
・ World record progression track cycling – Women's 500 m time trial
・ World record progression track cycling – Women's flying 200 m time trial
・ World record progression track cycling – Women's flying 500 m time trial
・ World record progression track cycling – Women's individual pursuit
・ World record progression track cycling – Women's team pursuit
・ World record progression track cycling – Women's team sprint
・ World records for fastest motorcycle ride around Australia
・ World Recreational Scuba Training Council
・ World Red Cross and Red Crescent Day
World Reference Base for Soil Resources
・ World Reformed Fellowship
・ World Refugee Day
・ World Register of Marine Species
・ World Relief
・ World Religion Day
・ World religions (disambiguation)
・ World Religions (TV series)
・ World Religions Conference
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・ World Report
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・ World report on disability
・ World Resources Forum
・ World Resources Institute


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World Reference Base for Soil Resources : ウィキペディア英語版
World Reference Base for Soil Resources
The World Reference Base for Soil Resources (WRB) is the international standard taxonomic soil classification system endorsed by the International Union of Soil Sciences (IUSS). It was developed by an international collaboration coordinated by the International Soil Reference and Information Centre (ISRIC) and sponsored by the IUSS and the FAO via its Land & Water Development division. It replaces the previous FAO soil classification.
The WRB borrows heavily from modern soil classification concepts, including USDA soil taxonomy, the legend for the FAO Soil Map of the World 1988, the Référentiel Pédologique and Russian concepts. The classification is based mainly on soil morphology as an expression of pedogenesis. A major difference with USDA soil taxonomy is that soil climate is not part of the system, except insofar as climate influences soil profile characteristics. As far as possible, diagnostic criteria match those of existing systems, so that correlation with national and previous international systems is as straightforward as possible.
The WRB is meant for correlation of national and local systems. The level of detail corresponds to USDA soil taxonomy subgroups, without the soil climate information. The second edition was not detailed enough for mapping at scales larger than about 1:200 000, and a third edition has been published, improving the system for soil mapping.
==Key ==
Identification key to the 32 reference soil groups:〔IUSS Working Group WRB. (2006). World reference base for soil resources 2006. 2nd edition. World Soil Resources Reports No. 103. FAO, Rome. ISBN 92-5-105511-4, http://www.fao.org/ag/agl/agll/wrb/doc/wrb2006final.pdf〕

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