Author: TORALES, Julio Ayala
Title: Mapas Isogonicos Polares
Description: Buenos Aires, 1946. 1st printing. Wraps. pp. 20. 4to. A few spots to front cover. Light overall shelf wear; else g/vg. A treatise on the polar isogenic lines. Published by the Universidad Nacional de Tuchman. The text is in Spanish, with folding map. .

Keywords: Magnetic pole;;;;;;;;


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