TY  - BOOK
AU  - Letham,Lawrence
TI  - GPS made easy: using Global Positioning Systems in the outdoors 
SN  - 0898868238
AV  - GV191.623 .L48 2003
U1  - 796.51/028/4 22
KW  - Outdoor recreation
KW  - Equipment and supplies
KW  - Global Positioning System
KW  - Orienteering
N1  - Includes bibliographical references (p. 205) and index
ER  -