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<br />o <br />---.1 <br />I'\:i <br />OJ <br /> <br />based on a system of sound water measurement and demonstration <br /> <br />of beneficial effects. <br /> <br />Wynn R. Walker <br />Civil Engineering Department <br />Colorado State University <br />Fort Collins, Colorado 80521 <br />A\lgust, 1970 <br /> <br />. <br /> <br />iv <br /> <br />l.; <br /> <br />,... <br />