TY  - BOOK
AU  - ORTON, D. Neil
TI  - Notes for draughtsmen : : a practical manual for students 
SN  - 356034097 (Hbk)
U1  - 604.24 
PY  - 1971///
CY  -  London
PB  - Macdonald
KW  - Mechanical drawing
N1  - Includes bibliographical references and index
ER  -