Heald, K. C. (1888-1971) Heald, Kenneth Conrad (1888-1971) Mather, Kirtley F. (1888-1978) Mather, Kirtley Fletcher (1888-1978) Stany Zjednoczone. Geological Survey
Heald, Kenneth Conrad (1888-1971) Heald, K. C. (1888-1971) Mather, Kirtley Fletcher (1888-1978) Mather, Kirtley F. (1888-1978) Stany Zjednoczone. Geological Survey