01037nam a2200301 a 4500 20260817172619.0 .b10137336 En QE75 P9 no. 1523 Macdonald, Ray Chemistry of the subalkalic silicic obsidians / by ..., Robert L. Smith and John E. Thomas Washington : U. S. Govt. Print. Off., 1992 214 p. United States. Geological Survey. Professional paper ; no. 1523 Obsidian Composition Smith, Robert L. Thomas, John E. .b10137336 mngc u 150521 1 951012 m a u 0 QE75 P9 no. 1523 GC b m 050 30050001036283 GC mngc 14 Barcode : - CREATED : 1995-10-13 RECORD # : i10156203 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 16788 16788 0 0 0 0 MAIN MAIN mngc 2026-08-17 0 QE75 P9 no. 1523 2026-08-17 17:26:19 1 2026-08-17 14