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 polyandry in Tibet 

Hi there. On 30 September 2005 you made a number of significant additions to this article, which have survived to this day, or would have, save for my undoing them:
Marcus S. Goldstein, whom you introduced to the text by explicit wiwilink as quoted here, as well as further described with his birth and death years in parentheses that followed, is not the Goldstein in question. The correct anthropologist is Melvyn C. Goldstein, born 1938, current co-director of The Center for Research on Tibet at Case Western Reserve University in Cleveland, Ohio.
At least your addition of the characterization of polyandry in Tybet as being ""exceedingly rare"" presently is, I'm sorry to say, unsupported by literature available already in 2001: See the PhD dissertation linked in its entirety from the Center's web archive of publications and other work on polyandry and family. 
I have corrected some of the above and made significant fixes in the Sources section, and  in the Polish-language version I prepared, the factual content reads correctly. The English-language version is still in need of attention, especially the inclusion of text documenting the revival of polyandry in Tibet de facto, which took place after communes fell by the wayside in China, and is blooming today, despite recent campaigns by the Chinese authorities to implement population control in rural Tibet from 1996 on. I'd like to see you redeem some of those earlier unfortunate and long-persisting mistakes of yore by lending a hand in bringing this article to a higher level of quality. Even careful copyeditting would be of help. Best wishes,  talk "