ID:DA16983380
Schalk, Arthur Frederick, b. 1880
同姓同名の著者を検索
L.M. Roderick and A.F. Schalk
Agricultural Experiment Station, North Dakota Agricultural College 1927 Bulletin / Agricultural Experiment Station, North Dakota Agricultural College 210
by A.F. Schalk
Agricultural Experiment Station, North Dakota Agricultural College 1926 Circular / Agricultural Extension Division, North Dakota Agricultural College 27
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