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

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

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