SINCE the advent of the motor-car the use of bituminous materials in road-making has become more and more widespread, and a definite knowledge of the chemical and physical characters of these ...
EXPERIMENTAL work extending over a period of years at the Mellon Institute of Industrial Research has resulted in the production of a new laboratory table top material made of a porous, non-warping ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback