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A new type of gold-platinum-copper mineralization in northern Transbaikalia

✍ Scribed by B. I. Gongalsky; Yu. G. Safonov; N. A. Krivolutskaya; V. Yu. Prokof’ev; A. A. Yushin

Book ID
110204028
Publisher
SP MAIK Nauka/Interperiodica
Year
2007
Tongue
English
Weight
310 KB
Volume
415
Category
Article
ISSN
1028-334X

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## Abstract It has been shown previously that supplementing plastic intrauterine devices (IUDs) with copper wire enhances the antifertility effect of the device. The use of copper intrauterine contraceptive devices, however, is currently limited to two to three years, mainly because of wire fragmen