TY  - BOOK
AU  - Donald Clarke
TI  - The new illustrated: science and invention encyclopedia: volume 3: bitumen-camera
U1  - 503.21 
PY  - 1989///
CY  - Westport,Connecticut
PB  - H.S. Stuttman Inc, Publishers
KW  - Science
KW  - Engineering
KW  - Technology
ER  -