Handbook of pictorial symbols 3,250 examples from international sources per Modley, Rudolf

Pictographs and graphs how to make and use them per Modley, Rudolf

U.S.A., measure of a nation a graphic presentation of America's needs and resources per Carskadon, Thomas Reynolds 1900-, Modley, Rudolf

U.S.A., measure of a nation a graphic presentation of America's needs and resources.

How to use pictorial statistics per Modley, Rudolf