TY  - BOOK
AU  - Bobrowsky,Peter T.
TI  - Aggregate resources: a global perspective 
SN  - 9054106751
PY  - 2000///
CY  - Rotterdam
PB  - A. A. Balkema
KW  - Aggregates (Building materials)
KW  - Sand
KW  - Gravel
ER  -