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<br />~ <br />~ <br />Ifj <br />N <br />c <br /> <br />UNITED STATES <br />DEPARTMENT OF THE INTERIOR <br /> <br />HABOLD L. ICKES. Secretary <br /> <br />BUREAU OF RECLAMATION <br /> <br />J ORN C. PAGE, Commissioner <br />R. F. W.ALTER, Chief Engineer <br /> <br />BOULDER CANYON PROJECT <br />FINAL REPORTS <br /> <br />PART VI-HYDRAULIC INVESTIGATIONS <br /> <br />Bulletin 1 <br /> <br />MODEL STUDIES <br />OF SPILLWAYS <br /> <br /> <br />DENVER, COLORADO <br />1938 <br />