(1977). Young students encyclopedia; Vol.1: Aardvark, ancient civilizations. Middletown, Connecticut: Xerox Education.
Citación estilo ChicagoYoung Students Encyclopedia; Vol.1: Aardvark, Ancient Civilizations. Middletown, Connecticut: Xerox Education, 1977.
Cita MLAYoung Students Encyclopedia; Vol.1: Aardvark, Ancient Civilizations. Middletown, Connecticut: Xerox Education, 1977.
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