TY  - BOOK
AU  - Ryan,Daniel L.,1941-
TI  - Technical sketching and computer illustration
SN  - 0138984204
AV  - T359 .R93 1990 
U1  - T/359 
PY  - 1990///
CY  - Englewood Cliffs, New Jersey
PB  - Prentice Hall
KW  - Computer graphics
KW  - Technical graphics
ER  -