Gordon Penrose | Bookhype

Dec 31, 1999

Cover of Bubble Splash Zoom!

Bubble Splash Zoom!

Jan 10, 1998

Cover of Science Fun

Sep 1, 1996

Cover of Dr. Zed's Sensational Science Activities

Dr. Zed's Sensational Science Activities

Mar 1, 1994

Cover of Magic Mud

Magic Mud (Owl Books)

Mar 1, 1993

Cover of Dr. Zed's Dazzling Book of Science Activities

Dr. Zed's Dazzling Book of Science Activities (Owl Books)

May 1, 1992

Cover of More Science Surprises from Dr. Zed

More Science Surprises from Dr. Zed

Apr 18, 1991

Cover of Science Surprises

Science Surprises

Oct 1, 1990

Cover of Sensational Science Activities with Dr. Zed

Sensational Science Activities with Dr. Zed

Apr 1, 1990

Cover of Doctor Zed's Science Surprises

Doctor Zed's Science Surprises

Jan 1, 1989

Cover of Dr. Zed's Science Surprises

Dr. Zed's Science Surprises

May 1, 1988

Cover of Magic Mud and Other Great Experiments

Magic Mud and Other Great Experiments