Patented inventions of the C.S.I.R CSIR, New Delhi.

CSIR, [New Delhi]

Patented inventions of the C.S.I.R CSIR, New Delhi. - New Delhi [s.n.] 1951 - 555p.

608.3 / P23P
HMS Central Library, Jamia Hamdard, Hamdard Nagar, New Delhi -110062, INDIA