POWERS, SAMUEL RALPH.
Our world changes, by Samuel Ralph Powers, Elsie Flint Neuner, Herbert Bascom Bruner & John Hodgdon Bradley. (Adventuring in science)
POWERS, SAMUEL RALPH. Our world changes, by Samuel Ralph Powers, Elsie Flint Neuner, Herbert Bascom Bruner & John Hodgdon Bradley. (Adventuring in science) © 30Jul40; A143780. Samuel Ralph Powers (A); 5Feb68; R429059.
Samuel Ralph Powers|A