TY  - BOOK
AU  - Willis, Arthur J.
AU  - Willis, Christopher J.
TI  - Elements of quantity surveying
T2  - Seventh editon metric
U1  - 620.02 
PY  - 1978///
CY  - London
PB  - Crosby Lockwood Staples
KW  - Construcción
KW  - Costos
ER  -