1
Published 2003
Book
6
by Ignatowski, Clare A.
Published 2006
Book
7
by Ofiaja, Nicholas D.
Published 1979
(CARLI) (Other Sources: (CSUdb)194695)
Book
8
Published 1986
Book
9
Published 1991
(CARLI) (Other Sources: (ISUdb)656956)
Book
11
Published 1987
(CARLI) (Other Sources: (NIUdb)241875, (UIUdb)948862)
Journal / Magazine
12
Published 1977
(CARLI) (Other Sources: (NIUdb)77867, (UIUdb)269812)
Journal / Magazine
16
Published 1979
(CARLI) (Other Sources: (NIUdb)446768)
Journal / Magazine
17
by Ngwane, George, 1960-
Published 2008
Book
18
Published 1972
(CARLI) (Other Sources: (NIUdb)802281)
Map
19
Published 1976
Journal / Magazine
20
Published 1976
Journal / Magazine