The Facts on File space and astronomy handbook

by Angelo, Joseph A.
Published 2002

The encyclopedia of African history and culture. Volume 2, African Kingdoms (500 to 1500)

by Page, Willie F., 1929-
Published 2001

The encyclopedia of African history and culture. Volume 3, From conquest to colonization (1500 to 1850)

by Page, Willie F., 1929-
Published 2001

Encyclopedia of world history

Published 2000

The encyclopedia of African history and culture. Volume 1, Ancient Africa (Prehistory to 500 CE)

by Page, Willie F., 1929-
Published 2001