Charles H. Lake, Louis E. Welton & James C. Adell.
Science through experiment: a general science workbook.
R590539. Science through experiment: a general science workbook. By Charles H. Lake, Louis E. Welton & James C. Adell. © 14Feb47; AA45504. Helen B. Welton (W of Louis E. Welton); 14Nov74; R590539.
Helen B. Welton|W of Louis E. Welton