TY  - BOOK
AU  -  Spencer,Henry Cecil
AU  -  Hill,Ivan Leroy
AU  -  Dygdon,John Thomas
TI  -  Technical drawing problems, series 2 / 
SN  -  0024143308
U1  -  Q 604.2 SPE 
PY  - 1980///
CY  -  New York : 
PB  -  Macmillan Pub. Co. 
KW  -  Mechanical drawing
KW  -  Problems, exercises, etc
ER  -