The influence of the soil conservation program on farm organization and operation in the Crooked Creek project area of western Pennsylvania

محفوظ في:
التفاصيل البيبلوغرافية
المؤلف الرئيسي: Walter, David Hartle, 1904-
اللغة:English
منشور في: [Ithaca, N.Y.] 1941.
سلاسل:USAIN state and local literature preservation project, New York. Cornell University thesis.
الموضوعات:
Soil conservation > Pennsylvania > Indiana County.
Farm management.
التنسيق:

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