TY  - BOOK
AU  - Hartman,William.
AU  - Williams,Fred.
TI  - Pipe drafting
SN  - 0070269459
AV  - TJ 930 .H39 1981 
PY  - 1981///
CY  - Newyork
PB  - McGraw-Hill
KW  - Pipe lines-drawings
KW  - Plumbing drafting
ER  -