TY  - BOOK
AU  -  Bogolyubov,S.
AU  -  Levant,L.
TI  -  Exercises in machine drawing / 
SN  -  5030008527
U1  -  621.82 BOG 
PY  - 1975///, 1980
CY  -  Moscow : 
PB  -  Mir Publishers, 
KW  -  Machine design
KW  -  Drawing
KW  -  Machinery
ER  -