Carbonizing Properties and Constitution of No. 6 Bed Coal from West Frankfort Franklin County, Ill. [U.S. Department of Commerce/Bureau of Mines, Technical Paper 524] Signed by Reinhardt Thiessen!
Washington DC: US Government Printing Office, 1932. Paperback. Signed by Thiessen! Printed paper with stapled binding, octavo, 60pp., illustrated in b&w. Book has cloth tape on spine, toning rubbing and soil to outer pages, stapled binding tight, text clean and unmarked but toned throughout. No DJ. Now in protective mylar.....