Secondary school science and mathematics teachers : characteristics and service loads

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110	2	⊔	‡aNational Association of State Directors of Teacher Education and Certification.
245	1	0	‡aSecondary school science and mathematics teachers : ‡bcharacteristics and service loads / ‡cReport of a survey by the National Association of State Directors of Teacher Education and Certification and the American Association for the Advancement of Science for the National Science Foundation.
260	⊔	⊔	‡a[Washington, D.C.] : ‡b[National Science Foundation; for sale by the Supt. of Docs., U.S. G.P.O.], ‡c[1963]
300	⊔	⊔	‡avi, 45 pages : ‡btables ; ‡c26 cm
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500	⊔	⊔	‡a"NSF 63-10."
538	⊔	⊔	‡aMode of access: Internet.
650	⊔	0	‡aMathematics teachers ‡zUnited States ‡vStatistics.
650	⊔	0	‡aScience teachers ‡zUnited States ‡vStatistics.
655	⊔	7	‡aStatistics. ‡2lcgft
710	2	⊔	‡aNational Science Foundation (U.S.)
710	2	⊔	‡aAmerican Association for the Advancement of Science.
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