X- and gamma-ray astronomy - Boston: D. Reidel Publishing Company, 1973 - x, 323p. - International Astronomical Union. Symposium No. 55 . ISBN: 9789027703033 Subjects--Topical Terms: Astrodynamics Subjects--Index Terms: Astrophysique Universal Decimal Class. No.: 52-732/-735(082.2) / L3