TY  - BOOK
AU  - Campbell,H.W.
TI  - Progressive Agriculture 1916: : tillage, not weather, controls yield
PY  - 1916///
CY  - Lincoln, Nebraska
PB  - Woodruff Bank Note Co.
KW  - ÑÐµÑÐ¼Ð°
KW  - ÑÐµÐ½Ð°
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ER  -