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The gabbros and associated rocks in Delaware
Frederick D. Chester · Govt. Print. Off.
45 sayfa · 1890
Diorite / Gabbro / Geology / Igneous Rocks / Petrology
Bacteria of the soil in their relation to agriculture
Frederick D. Chester, Wm. Stanley Ray, Pennsylvania. Department of Agriculture · W.S. Ray, State Printer of Pennsylvania
88 sayfa · 1902
Soil microbiology / Agricultural Bacteriology