Catherine Ripley

title	media type	ISBN-13	year of publication
Do the Doors Open by Magic?	Hardcover	978-0-19-910461-1	1997
Do the Doors Open by Magic?	Paperback	978-0-19-910462-8	1997
How? and Why? Mixed Sku	Hardcover	978-1-926973-58-6
How?: The Most Awesome Question and Answer Book about Nature, Animals, People, Places—and You!	"	978-1-926973-24-1	2012
Why Does Popcorn Pop?: And Other Kitchen Questions	Library Binding	978-0-613-27571-2	1997
Why Do Stars Twinkle?	Hardcover	978-0-19-910459-8	1997
Why Do Stars Twinkle?	Paperback	978-0-19-910460-4	1997
Why is Soap So Slippery?	Hardcover	978-0-19-910463-5	1997
Why is Soap So Slippery?	Paperback	978-0-19-910464-2	1997
Why is the Sky Blue?	Hardcover	978-0-19-910457-4	1997
Why is the Sky Blue?	Paperback	978-0-19-910458-1	1997
Why?: The Best Ever Question and Answer Book about Nature, Science and the World around You	Hardcover	978-1-926818-00-9	2010
Why?: The Best Ever Question and Answer Book About Nature, Science and the World Around You	"	978-1-897066-17-1	2004
Why?: The best ever question and answer book about nature, science and the world around you	"	978-1-894379-25-0	2001