Patented inventions of the CSIR:1940 - 1964
Council of Scientific and Industrial Research
Patented inventions of the CSIR:1940 - 1964 - New Delhi CSIR 1965 - 228 p.
R083:608.3(CSIR) J1.2
Patented inventions of the CSIR:1940 - 1964 - New Delhi CSIR 1965 - 228 p.
R083:608.3(CSIR) J1.2