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p c mangelsdorf
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The Origin Of Indian Corn And Its Relatives
P. C. Mangelsdorf, R. G. Reeves · Kessinger Publishing, LLC
320 sayfa · 2007
General / Nature / Nature/Ecology
Strain energy as a basis for optimizing roof truss installations in bedded roof
C. P. Mangelsdorf · U.S. Dept. of the Interior, Bureau of Mines
24 sayfa · 1988
Mine roof control / Roof trusses