TY  - BOOK
AU  - Gordon, V. O.
AU  - Sementsov-Ogieskii, M. A.
AU  - Levant, Leonid., Tr.
TI  - Course in descriptive geometry
U1  - 516.6 
PY  - 1980///
CY  - Moscow
PB  - MIR publishers
ER  -