erovnuli-samecniero-biblioteka Search for 'au:"Heyl, George Richard,"'

Geology and mineral deposits of the bay of Exploits area

By Heyl, George Richard,.
St. John's, 1936 .
4 p. l., 66 p. , Rotaprinted in double columns. | Also issued as Princeton University contributions to the geology of Newfoundland. 28 cm..

]]> Place hold on Geology and mineral deposits of the bay of Exploits area

The geology of the Sops Arm area, White Bay, Newfoundland,

By Heyl, George Richard,.
St. John's, 1937 .
v, 42 p. , Photo-printed. 27 cm..

]]> Place hold on The geology of the Sops Arm area, White Bay, Newfoundland,

Kaolin deposits of southern Pike County, Arkansas,

By Herold, Paul George,.
Little Rock, 1942 .
38p. , At head of title: State of Arkansas Geological Survey, Richard J. Anderson, acting state geologist. 23cm..

]]> Place hold on Kaolin deposits of southern Pike County, Arkansas,