TY  - BOOK
AU  - Wolff,Doug
TI  - Drafting symbol sourcebook
SN  - 0070713324
PY  - 1999///
CY  - Whitehouse Station
PB  - McGraw-Hill
KW  - Mechanical drawing-
KW  - Notation
KW  - Signs and symbols
N1  - Includes index
ER  -