TY  - BOOK
TI  - Normas ASTM
SN  - 9684641001
AV  - TA439 N67 2001
PY  - 2001///
CY  - México, D.F.
PB  - Instituto Mexicano del Cemento y del Concreto
KW  - Concreto
KW  - Normas
N1  - "American Society for Testing and Materials"; Traduccion de: ASTM C 29/C 29M-97 Standard test method for unit weight and voids in aggregate [y otros]
ER  -