The magnetic field of the earth-1985 : vertical intensity chart /

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Peddie, Norman W., Zunde, Audronis K.
Format:	Government Document Map
Language:	English
Published:	Reston, Va. : The Survey ; 1988.
Series:	Geophysical investigations (Geological Survey (U.S.)) ; map GP-987-Z.
Subjects:	Geomagnetism > Maps.

Description
Item Description:	Includes 2 ancillary maps of the polar regions. Scale 1:60,192,000 (along meridians only). Cartographic material.
Physical Description:	1 map : color ; 63 x 100 cm., on sheet 86 x 122 cm.