All about sound and utrasonics
Freeman, Ira M.
All about sound and utrasonics - New York: Random House, 1961. - 141p.: ill.; 24cm.
Sound
Juvenile literature
QC225.5.F7
All about sound and utrasonics - New York: Random House, 1961. - 141p.: ill.; 24cm.
Sound
Juvenile literature
QC225.5.F7