TY - BOOK ED - American Concrete Institute. TI - Proportioning concrete mixes T2 - Publication - American Concrete Institute ; SP-46 U1 - 620.136 PY - 1974/// CY - Detroit PB - American Concrete Institute KW - Concrete KW - Congresses KW - MCE N1 - Based on and adapted from a combined workshop session and paper symposium presented at the 1972 ACI annual conventnion at Dallas, Tex., and sponsored by ACI Committee 211; 0; 0; 0; 620_136000000000000_PRO ER -