1
by gagne, Robert M.
Published 1959
2
Published 1979
3
by Horney, Karen, 1885-1952.
Published 1942
4
by Maclagan, W. G.
Published 1961
5
by Powell, Trevor
Published 2000
6
by Adler, Alfred
Published 1962
7
by Ferrater Mora, Jose, 1912-
Published 1960
8
by Ziglar, Zig.
Published 1993
9
by Novak, Michael
Published 1965
10
by Abdullah b. Mohamed
Published 1980
11
12
by Huberman, Edward
Published 1962
13
by Heidegger, Martin
Published 1956
14
by De Bono, Edward, 1933-
Published 1990
15
by De Bono, Edward, 1933-
Published 1990
16
by Koran, Al
Published 1972
17
18
by Nostradamus, 1503-1566.
Published 1982
19
by Sargent, W. E.
Published 1971
20
by Honigmann, John Joseph
Published 1954