The New Encyclopaedia Britannica in 30 Volumes vol. 7, micropaedia, ready reference and Index Encyclopedia Britannica - 22nd ed. - Chicago Encyclopaedia Britannica 1984 - 1026p. ISBN: 0-85229-413-1 Subjects--Topical Terms: Encyclopedia-MicropaediaNASA Thesaurus Universal Decimal Class. No.: 031 / EBR-7