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Looking for unpublished UN geology documents 1960s-70s

HeatherSweeney

Hi, I'm looking for two obscure, unpublished documents -- thought I'd try my luck here. Does anyone have access to either of the following or know how to track them down?:

Beus, A.A. 1969. Suggestions on the exploration programme within the Muzo-Coscuez emerald-bearing region in the Cordillera Oriental (Colombia). O.T.C., United Nations, New York, N.Y., 15pp. (unpublished report)

Beus, A.A. 1974. Emerald exploration in the Cordillera Oriental, Colombia, S.A. O.T.C., United Nations, New York, N.Y., 11 pp. (unpublished report)

A client found references to these materials in another document.

Thanks,

Heather

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