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QH 3221 Earthworm model

QH 3221
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Size(cm):61x11x24 
(dissection  anatomical and magnified earthworm model)subject of morphol-ogy of the earthworm. It may be used anterion portion of an earthworm.It is designed in accord with text books used for classroom self-study and shows the exter-for high school biology as a visual aid onnal features and internal structure of the
 

暂未实现,敬请期待
暂未实现,敬请期待