Author: Olson Judy M.
Publisher: Cartography and Geographic Information Society
ISSN: 1545-0465
Source: Cartography and Geographic Information Science, Vol.14, Iss.3, 1987-07, pp. : 275-278
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract