Moderm farm power - William. J Promersberger; Donald. W Priede Frank. E Bishop (Reston Reston Publishing Co, 1979)
William. J Promersberger; Donald. W Priede & Frank. E Bishop: Moderm farm power. Reston. Reston Publishing Co, 1979. 0-8359-4560-X--(631.3PRO)
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