by Juhele - uploaded on September 13, 2018, 7:40 pm
Selection of various building materials - standard clay bricks, hollow concrete "brick" and a concrete block
This clipart is a remix from:
Penetrating power of different types of radiation - alpha, beta, gamma and neutrons
by @Juhele
hollow bricks
by @belier
brick frame damaged
by @jarda
Brick
by @fabiovaleggia
Brick
by @Anonymous