TY - BOOK AU - Langer, William H. AU - Glanzman, V. M. CN - QE75 CN - TN939 CN - QE75 CY - [Reston, Va.?] : CY - Denver, CO : DA - 1993. ID - 149321 KW - Aggregates (Building materials) LK - http://purl.access.gpo.gov/GPO/LPS100581 N1 - Shipping list no.: 93-0478-P. PB - U.S. Dept. of the Interior, U.S. Geological Survey ; PB - USGS Map Distribution [distributor], PP - [Reston, Va.?] : PP - Denver, CO : PY - 1993. T1 - Natural aggregate building America's future / TI - Natural aggregate building America's future / UR - http://purl.access.gpo.gov/GPO/LPS100581 VL - 1110. ER -