Editore: Pennsylvania Mineral Ind Exp Sta, University Park, PA, 1955
Da: Larry W Price Books, Portland, OR, U.S.A.
Rivista / Giornale Prima edizione
Paperback. Condizione: Very Good. 1st Edition. Bull No 65, 12 pp., Photos, Color Illus, Grey Illus Paperback, 4to, 3-ring binder holes else VG, Assumed 1st ed.