TY  - BOOK
AU  - Hotaling,W.W.
TI  - Extending aggregate resources: a symposium 
PY  - 1982///
CY  - Philadelphia, Pa
PB  - ASTM
KW  - Road materials
KW  - Congresses
KW  - Aggregates (Building materials)
N1  - 'ASTM publication code number (PCN) 04-774000-08'; Includes bibliographical references and index
ER  -