00478nam a2200145Ia 4500008004100000010001200041040001700053082003000070110007300100245003700173250000800210260003600218300000900254650006900263190328s9999||||xx |||||||||||||| ||und||  a61-9322  aNITILcNITIL  221sta371.33580973bF981T  aFord Foundation and Fund for the Advancement of Education (New York) 0aTeaching by televisionba report  a2nd  aNew YorkbFord Foundationc1961  a87p.  aTelevision in education-United States; Teaching-Aids and devices