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|Material Type:||Government publication, State or province government publication|
|All Authors / Contributors:||
Charlotte Antoinette Crabtree; United States. Office of Education.
|Notes:||"Research ... performed pursuant to a contract with the Office of Education, U.S. Department of Health, Education and Welfare. Project no. 5-1037; Contract no. OE-4-10-099."|
|Description:||334 pages in various pagings : illustrations ; 26 cm|
|Responsibility:||Charlotte A. Crabtree.|