TY  - BOOK
AU  - Kals,W.S.
TI  - Land navigation handbook: the Sierra Club guide to map andcompass 
T2  - The Sierra Club Outdoor Activities Guides
SN  - 0-87156-331-2
AV  - GV200.4 K35
PY  - 1983///
CY  - San Francisco, Calif.
PB  - Sierra Club
ER  -