000			00629nam a2200229Ia 4500
008			160319s9999 xx 000 0 und d
245			_aForces /
245			_cBritish Broadcasting Corporation.; Schlessinger Media.
260			_c2004
300			_a1 videodisc (18 min.) :
300			_bdigital, sound, color ;
300			_c4 3/4 in.
440			_aScience clips for children.
650			_aForce and energy --
650			_aFriction --
650			_aGravity --
650			_aMotion --
650			_xJuvenile films.
650			_xJuvenile films.
650			_xJuvenile films.
650			_xJuvenile films.
999			_c292829 _d292829