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Satellites and space probes
by
Niki Walker
Crabtree Pub. Co., 1998
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The moon
by
Niki Walker
Crabtree Pub., 1998
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Sharks
by
Niki Walker
Crabtree Pub. Co., 1997
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Los gatitos
by
Niki Walker
Crabtree Pub. Co., 2006
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Colonial women
by
Niki Walker
Crabtree Pub., 2003
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Sharks (Crabapples)
by
Niki Walker
Tandem Library, October 1999
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Que Es Un Dinosaurio?/what Is a Dinosaur (La Ciencia De Los Seres Vivos/Science of Living Things (Spanish))
by
Niki Walker, Bobbie Kalman
Crabtree Publishing Company, October 30, 2006
Paperback
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Hydrogen
by
Niki Walker
Crabtree Publishing Company, January 11, 2007
Library Binding
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Los Gatitos / Kittens (El Cuidado De Las Mascotas / the Care of the Pets)
by
Niki Walker, Bobbie Kalman
Crabtree Publishing Company, April 30, 2006
Paperback
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Generating Wind Power (Energy Revolution)
by
Niki Walker
Crabtree Publishing Company, January 11, 2007
Library Binding
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The Milliner (Colonial People)
by
Niki Walker, Bobbie Kalman
Crabtree Publishing Company, February 2002
Library Binding
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Generating Wind Power (Energy Revolution)
by
Niki Walker
Crabtree Publishing Company, January 25, 2007
Paperback
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Biomass
by
Niki Walker
Crabtree Publishing Company, January 25, 2007
Paperback
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Hydrogen
by
Niki Walker
Crabtree Publishing Company, February 28, 2007
Paperback
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Life in an Anishinabe Camp (Native Nations of North America)
by
Bobbie Kalman, Niki Walker
Crabtree Children's Books, October 2002
Paperback
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Fútbol en acción
by
Niki Walker
Crabtree Pub. Co., 2005
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Tsunami alert!
by
Niki Walker
Crabtree Pub. Co., 2005
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Transportation disaster alert!
by
Niki Walker
Crabtree Pub. Co., 2005
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Native North American wisdom and gifts
by
Niki Walker
Crabtree Pub. Co., 2006
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Hockey in action
by
Niki Walker
Crabtree Pub. Co., 2000
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