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Spring
Richard Allington
Unknown Binding (Blackwell Raintree, March 15, 1981)None
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Summer
Richard Allington
Unknown Binding (Blackwell Raintree, )None
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Beginning to Learn: Smelling
R L Allington, K Krull
Hardcover (Blackwell Raintree, April 2, 1981)None
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Beginning to Learn: Opposites
R L Allington, K Krull
Hardcover (Blackwell Raintree, April 2, 1981)None
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Biggest Machines
Denise Kiley
Hardcover (Blackwell Raintree, April 2, 1981)None
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Sea Machines
Sal Fenner
Hardcover (Blackwell Raintree, March 15, 1981)None
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Wind and water energy
Sherry Neuwirth Payne
Unknown Binding (Blackwell Raintree, March 15, 1983)None