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<br /> <br />~ ~g~~Q~~~~g~E~I~ <br />l'V <br />o <br />r-.' The information presented in this report has been drawn <br /> <br />from various sources. The references cited represent a <br /> <br />worthwhile and useful assemblage of publications on the <br /> <br /> <br />subject of irrigation return flow but is not intended to be <br /> <br /> <br />all-inclusive. The soil Conservation Service, USDA, and the <br /> <br />Bureau of Reclamation, USDI, have made a valuable <br />contribution in the form of both technical advice and <br /> <br />photographs of various aspects of problems associated with <br />irrigated agriculture and methods related to their solution. <br /> <br />Technical advice, comment, review and editing were <br /> <br /> <br />provided by personnel of the Non-Point Source COntrol <br /> <br /> <br />Branch, Office of Water program Operations, and by personnel <br /> <br /> <br />of other elements of the Environmental Protection Agency. <br /> <br />viii <br /> <br />. <br /> <br /> <br />. <br /> <br />" <br />