The Zobler soil datasets were developed by the World Data Center-A
(WDC-A) for Solid Earth Geophysics, operated by the U.S. National
Geophysical Data Center (NGDC). The data set is part of the World ...
[Adapted from "About the GSA Data Repository",
The above data set may be dowloaded from the Geological Society of
America (GSA) Data Repository, ...