Bibliografía (28 obras)
The history of science and technology
2004
Diseases
2003
2002
The Kingdom of Infinite Number
2000
Math (Grades 4-5) (Step Ahead)
Math (Grades 5 - 6) (Step Ahead)
Math Skills 5-6
The Penguin desk encyclopedia of science and mathematics
Math Skills 4 Grade 4-5-Workbook
The family encyclopedia of disease
1998
Math
1997
Handbook of current science & technology
1996
Math skillbuilders
1995
Handbook of Current Health & Medicine
1994
The timetables of technology
1993
科学年表
The Henry Holt handbook of current science & technology
1992
Reality's mirror
1989
Matemática insólita
1987
Globe Earth Science (Globe earth science)
The Science almanac
1984
Practical herb gardening with recipes
Fun with math
1983
Algebra 1
Math (Grades 3 - 4) (Step Ahead)
Math (Grades 3 - 4) (Step Ahead Golden Books Workbook)
Mathematical fallacies and paradoxes
1982
