2
Journal / Magazine
3
by Durnbaugh, Donald F.
Published 1974
Book
4
by Robinson, Peter S.
Published 1979
Book
6
by Keith-Lucas, Alan.
Published 1962
Book
7
Journal / Magazine
9
Published 1972
Journal / Magazine
11
Published 1948
Journal / Magazine
12
by Monsma, Stephen V., 1936-
Published 2006
Book
13
Journal / Magazine
14
by Ellor, James W.
Published 1999
Book
15
by Cnaan, Ram A.
Published 2002
Book
16
by Ramsey, Elling E. 1902-
Published 1958
Book
17
Published 1947
Book
19
by Ramsey, Elling E. 1902-
Published 1959
Book
20
Published 1999
Book