USGS OF 509
Title:Reconnaissance geologic map of the Nabesna A-4 Quadrangle, Alaska
Publisher:U.S. Geological Survey
Comments:This publication was reclassified with a new publication number in 1975; see below for the updated classification number.
Ordering Info:This publication is out of print. Reproductions may be available. USGS Publications Warehouse
Richter, D.H., 1972, Reconnaissance geologic map of the Nabesna A-4 Quadrangle, Alaska: U.S. Geological Survey Open File Report: Technical Data Unit classification number 509, 1 sheet.