Espenshade, Gilbert H. 1912-1993
Geology of phosphate deposits of Northern Peninsular Florida / by Gilbert H. Espenshade and Charles W. Spencer. -- Washington : United States Government Printing Office, 1963 - 116 p. + map. -- (Geological Survey Bulletin ; 1118).
Florida
Yacimientos de fosfatos
553.64(759)
Geology of phosphate deposits of Northern Peninsular Florida / by Gilbert H. Espenshade and Charles W. Spencer. -- Washington : United States Government Printing Office, 1963 - 116 p. + map. -- (Geological Survey Bulletin ; 1118).
Florida
Yacimientos de fosfatos
553.64(759)