Post di altri Blog

mercoledì 3 agosto 2016

American Educational Hardness Collection with Test Kit by American Educational Products


Hardness collection with test kit for geological study;Nine mineral specimens for testing on traditional hardness scale;Number coded with key sheet for identification;Compartmented tray for display and storage;Test kit, with streak plate, glass plates, and nail, for hands-on learning.
Link Amazon

Nessun commento:

Post più popolari