Determination for the modal age level for the grades IV and VI of the difficulty of the principal: The more rapid the vibrations of a body, the higher is the pitch of the note emitted by it

Pooler, Robert L2014-04-042014-04-0419541954b14686090https://hdl.handle.net/2144/8372This item was digitized by the Internet Archive. Thesis (Ed.M.)--Boston Universityen-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsDetermination for the modal age level for the grades IV and VI of the difficulty of the principal: The more rapid the vibrations of a body, the higher is the pitch of the note emitted by itThesis/Dissertation