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040 _aMX-SnUAN
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050 1 4 _aLB1607
_bB5 1940
100 1 _aBillett, Roy O.
_eautor
_986148
245 1 0 _aFundamentals of secondary-school teaching
_bwith emphasis on the unit method
_cpor Roy O. Billett
264 1 _aBoston
_bHoughton Mifflin
_c1940
300 _a671 páginas
336 _atexto
_btxt
_2rdacontent
337 _ano mediado
_bn
_2rdamedia
338 _avolumen
_bnc
_2rdacarrier
650 4 _aEducación secundaria.
_942566
650 4 _aEducación
_xMétodos experimentales.
_933499
942 _c1
999 _c90191
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