TY  - BOOK
AU  - Letham,Lawrence
TI  - GPS fàcil: uso del Sistema de Posicionamiento Global
SN  - 8480195916
PY  - 2001///
CY  - Seattle, WA
PB  - Mountaineers
KW  - Outdoor recreation
KW  - Equipment and supplies
KW  - Local
KW  - Spanish language materials
KW  - Orienteering
KW  - Global Positioning System
N1  - Título original: GPS made easy; Includes bibliographical references (p. 201) and index
ER  -