TY  - BOOK
AU  - sack,K.
AU  - linsel,hermann
TI  - planning of technical progress in socialist countries :  : planning of research and development / 
T2  - External Notes ؛
U1  - 338.9 21
PY  - 1966///
CY  - cairo : 
PB  - the institute of national planning, 
KW  - planning
KW  -  scoialist countries
KW  - technical progress
ER  -