TY - BOOK ED - National Research Council (U.S.). TI - Investigation and development of materials resources = SN - 0309028213 U1 - 625.735 PY - 1979/// CY - Washington PB - Transportation Research Board, Commission on Sociotechnical Systems, National Research Council, National Academy of Sciences KW - MCE KW - Road materials KW - Developing countries KW - Roads KW - Surveying N1 - "Prepared under contract AID/OTR-C-1591, project 931-1116, U.S. Agency for International Development."; Includes index; 0; 0; 0; 625_735000000000000_NAT ER -