US$ 98.00
the elongated triangular geometry handling longer ray paths for total internal reflection and beam-redirection optics
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a lamp house
this frog model demonstrates egg
Rock Cycle 3D Cross-Section Model, 18 x 24" Electricity & Magnetism_Electromagnetism & Motors the elongated triangular geometry handlingThree dimensional rock cycle cross section of Earth's crust on an 18 by 24 inch display, packaged with a teacher's guide linking igneous, sedimentary, and metamorphic transformations.
US$ 98.00
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