Bibliografía (23 obras)
Home Run! Science Projects with Baseball and Softball
2009
Home run!
46 science fair projects for the evil genius
2008
Mensa Science Experiments
2006
Gigantic Book of Winning Science Fair Projects
2005
Giant Book of Winning Science Fair Projects
2003
Giant book of winning science fair projects
2000
Science fair projects : physics
1999
Science fair projects
1998
Science Fair Projects with Electricity and Electronics
1997
Science fair projects with electricity & electronics
1996
1995
Space and astronomy
1992
Computers
1990
Botany
Environmental Science
1989
Earth science
