TY - BOOK AU - Knepper, Daniel H. AU - Langer, William H. AU - Miller, S. H. CN - I 19.76: CY - Denver, CO : DA - 1994. ID - 196735 KW - Aggregates (Building materials) KW - Prospecting N1 - Cover title. N1 - Distributed to depository libraries in microfiche. N1 - Shipping list no.: 95-0601-M. PB - U.S. Dept. of the Interior, U.S. Geological Survey : PB - [Books and Open-File Reports Section, distributor], PP - Denver, CO : PY - 1994. T1 - Remote sensing and airborne geophysics in the assessment of natural aggregate resources TI - Remote sensing and airborne geophysics in the assessment of natural aggregate resources VL - 94-158 ER -