Mapa geomagnético, península ibérica: isogonas; declinación oeste, an̂o. 1970.

Bibliographic Details
Corporate Author:	Instituto Geográfico y Catastral (Spain)
Format:	Map
Language:	Spanish
Published:	[Madrid], [publisher not identified] ; 1971.
Subjects:	Magnetic anomalies > Spain > Maps. Magnetic anomalies > Portugal > Maps. Geomagnetism > Spain > Maps. Geomagnetism > Portugal > Maps.

Evans: Maps (2nd floor)