The world of learning 1980-81.
Inhalt Karte:Czyt. Og. 197,426 WORLD The world of learning 1980—81. 31 ed. London 1979 Europa Publ. Ltd. 4 Vol. 1. 1. International. 2. Afganiatan -Qatar, s. XV, nlb. 1, 1096 Vol. 2. Romania - Zimbabwe, index s. XV, nlb. 1, 1097 - 2110