gmt资源

gmt-china.org

http://www.ceri.memphis.edu/people/egdaub/datanotes/_build/html/gmt3.html

http://www.ceri.memphis.edu/people/egdaub/

http://140.112.56.1/geodesy1/index.php?option=com_content&task=view&id=30&Itemid=49