John D. Hamaker died in 1994.
John D. Hamaker was born in 1914.
Hugo Christiaan Hamaker died in 1993.
John D. Hamaker has written: 'The survival of civilization depends upon our solving three problems--carbon dioxide, investment money, and population' -- subject(s): Effect of human beings on, Food supply, Glaciers, Nature, Soil degradation
John Irvin Hamaker has written: 'The composition of beach sand with special reference to its organic component' -- subject(s): Sand
Hugo Christiaan Hamaker was born in 1905.
J. I. Hamaker has written: 'The principles of biology' -- subject(s): Biology
Rex G. Hamaker has written: 'The computer and small business' -- subject(s): Management
John D. Batten died in 1932.
John D. Fredericks died in 1945.
John D. Lauder died in 1934.
John D. Hickerson died in 1989.
John D. Strong died in 1992.