01-24-22 – Ron Kotrba of Warren, Minnesota on his book The Birth of American Biodiesel. Posted: January 24, 2022 @ 3:10 pm Farm Talk Segment 5 - Ron Kotrba - The Birth of American Biodiesel. Farm Talk Podcasts Subscribe on these platforms RSS iTunes Embed Download Go to Podcast 01-24-22 Ron Kotrba of Warren, Minnesota on his book The Birth of American Biodiesel. 1x .75x 1x 1.25x 1.5x 1.75x 2x
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