ISBN 1483212939 books & textbook
Tables of IGY Monthly Median Ionospheric Data: Annals of The International Geophysical Year, Vol. 17
Beynon, W. J. G. Minnis, C. M.
Pergamon /1962-01-01 Paperback / 358 Pages
isbn-10: 1483212939 / isbn-13: 9781483212937
