A Practical Physiology Price: Rs.1336Imported Edition. Format: Paperback Seller: Grabmore Free Shipping. COD Available. Delivery in 30 days. We have just learned that the pitch of sound depends on the rapidity of the vibrations. This depends on the length of cords and their tightness for the shorter and tighter a string is the higher is the note which its vibration produces. The vocal cords of women are about one-third shorter than thos
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