Flexible bond, 90mm (double bonding), Packs of ten 90mm flexible bonds to represent double bonding, Use to supplement your Unit building sets or for building custom models
Book, The Moon Seems to Change (Let's-Read-and-Find-Out Science 2), Branley, Franklyn M, Shows some signs of wear and have some markings on the inside, Children can read about the phenomena of the moon's phases and in an experiment using an orange, pencil and flashlight
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