00729nam a2200193Ia 450000100070000000500170000700700100002400800410003424500630007526000770013830000490021553800080026454600120027269000210028469000250030594200060033099900190033695201800035532754120160619015346.0vf cb  ou310714n1981    ilu    g          v eng  00aCreating a positive classroom atmosphereh[videorecording]  aChicago, IllinoisbEncyclopedia Britannica Educational Corporationc1981  a1 videodisc (19:29 min.)bsd., col.c1/2 in.  aVHS  aEnglish 4aAudiovisualxVHS 4aEducación Física  c1  c244663d244663  00102loc406ED_F_021_000000000000000_VVHS708mbav9177744a12b12cAd2016-05-27i525756l0oED/F 021 V-VHSp50000003258349r2016-05-27 00:00:00xAudiovisual x r:327541y1