The approach to philosophy
New York 1905. 448 S.
Professional philosophy. What it is and why it matters
Dordrecht 1986. 236 S.
Issues in philosophy
London 1990. 366 S.
Philosophy
Belmont (Calif.) 1998. 383 S.
Man and the universe. The great questions
Dollar (Scotland) 1981. 154 S.
Philosophy. A literary and conceptual approach
New York 1974. 514 S.
Renewing philosophy
Cambridge (Mass.) 1992. 234 S.
The enduring questions. Main problems of philosophy
New York 1980. 630 S.
Understanding philosophy
Belmont (Calif.) 1974. 243 S.
The rise of scientific philosophy
Berkeley (Calif.) 1951. 333 S.