Open AccessExaminationo f a sample of blackboard slate from the public school, Bell's Corners, Ontario
Author(s) -
F E Hanes
Publication year - 1961
Language(s) - English
Resource type - Reports
DOI - 10.4095/324794
Subject(s) - blackboard (design pattern) , sample (material) , art , art history , geography , visual arts , engineering , engineering drawing , physics , thermodynamics