 | Agricultural machinery United States Statistics. | (3) |
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 | Uses of agricultural machinery in 1964 : custom and exchange work, machine rental / . Strickler, Paul Eugene, 1908- 2n Washington, D.C. : U.S. Dept. of Agriculture, Economic Research Service, Statistical Reporting Service, 1966. | |
| Farm machinery and equipment : number and value of shipments for domestic use, 1935-39 to 1966 / . Strickler, Paul Eugene, 1908- 2n Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1968. | |
| Power and equipment on farms in 1964 : 48 states, major items by size and type / . Strickler, Paul Eugene, 1908- 2n Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1970. | |
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