REGIONAL PLANNING, 1936-43: PT.6 - UPPER RIO GRANDE BASIN; PT.9 - THE NORTHERN GREAT PLAINS A PROGRESS REPORT; PT.10 - THE PECOS RIVER JOINT INVESTIGATION IN THE PECOS RIVER BASIN IN NEW MEXICO AND TEXAS; PT.11 - THE SOUTHEAST AND PART 12 - ARKANSAS VALLEY.
Other titles: RIO GRANDE JOINT INVESTIGATION IN THE UPPER RIO GRANDE BASIN IN COLORADO, NEW MEXICO AND TEXAS, 1936-1937: PT.6, VOL. 1 OF REGIONAL PLANNING, 1936-43.
Notes: LIBRARY HAS PARTS 6, V.1; 9, 10, 11 AND 12 ONLY