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  3. Volume 6, 1967
  4. A study of the annual variation of the refraction coefficient

A study of the annual variation of the refraction coefficient

ISTCGCAP.
1967;
Volume 6, Number 6
: 105-109
Received: September 23, 1966
Authors:
  1. L. S. Khyzhak
  2. D. I. Maslich
1
Lviv Polytechnic National University
2
Lviv Polytechnic National University