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3
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Exploring the Amazon / by Helen and Frank Schreider ; forew. by Gilbert M. Grosvenor.
- 878.4
- National geographic society. Special publications division,
- cop. 1970.
- Washington, DC :
-
Socio-economic change in Latin America : the proceedings of the Latin American institute, Washington, 1968 and 1969 / ed. by Alberto Martinez Piedra.
- 875
- Catholic University of America Press,
- cop. 1970.
- Washington, DC :
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Manufacture of heavy electrical equipment in developing countries / Ayhan Ãilingiroglu.
- International Bank for Reconstruction and Development,
- cop. 1970.
- Washington, DC :