Non abbiamo ancora una biografia di Halpern.
Pubblicato in Inglese

Where Do Bugs Live Sb (Pair-It Books)
1997

Understanding Finance
2006
Thought and Knowledge
2006
The Third Way,
1998
T& K Instructors Manual W/Tests 4th
2002
SET T&K &THINK.CRITICALL OP
1995

Say What You Do
2007

Pulp Mill Processes
1981
Principles of Ayurvedic Medicine
2018
Pib Theme Pack
2002

Norman Rockwell
2006

Neighbors at War
2000

Mind and movement in psychotherapy
1997
Methods Propagation Equations
2000

Manners Please! (Pair-It Books)
1997
How Many Seeds Sb (Pair-It Books)
1997
History of our people in Bible times
1968
Government Politics and Social Structures of Laos
1988