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	1.	No cover image available Technical and economic causes of productivity changes in U.S. wheat production, 1949-76 / by J. J. Bond and D. E. Umberger ; prepared by Science and Education Administration by Bond, J. J. (Jack J.), 1931- Umberger, Dwaine E [jt. aut] United States. Science and Education Administration Series: Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : United States Government Printing Office, 1979 Availability: Items available for loan: National Library of India (1)Call number: U.S 338.173110973 B 640 t. Place hold Request article Save to lists
	2.	No cover image available Financial structure of range farms in the Columbia basin project / Norman K. Whihlesey and Dwaine E. Umberger by Whihlesey, Norman K Umberger, Dwaine E [jt. aut] United States. Washington Agricultural Experiment Station Series: Bulletin ; 719 Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : Agricultural Experiment Station, 1970 Availability: Items available for loan: National Library of India (1)Call number: U.S 338.10973 W 576. Place hold Save to lists

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