TY  - GEN
T1  - Aeromagnetic map of the El Cajón 1:100,000 scale quadrangle, California
DA  - 1992.
CY  - [Reston, Va.?] :
CY  - [Denver, Colo. :
AU  - Jachens, Robert C.
VL  - 92-548
CN  - I 19.76:
PB  - The Survey ;
PB  - Books and Open-File Section, distributor],
PP  - [Reston, Va.?] :
PP  - [Denver, Colo. :
PY  - 1992.
N1  - Relief shown by contours and spot heights.
N1  - "Topographic contour on base 50 meters."
N1  - Distributed to depository libraries in microfiche.
N1  - Shipping list no.: 93-0914-M.
N1  - Includes text, bibliographical references, diagram, table, index and location maps.
ID  - 198948
KW  - Geomagnetism
KW  - Geomagnetism
TI  - Aeromagnetic map of the El Cajón 1:100,000 scale quadrangle, California
ER  -