TY  - BOOK
AU  - Bogolyubov,S.K
TI  - Exercise in Machine drawing
U1  - 604.4B675e/1986 
PY  - 1986///
CY  - Moscow
PB  - Mir Publication
KW  - Machinery
KW  - Drawings
KW  - Machine design
KW  - Technical drawing
ER  -