00466nam a2200193Ia 4500 OSt 20251203095531.0 250729s1986 xx 000 0 und d 92-3-102779-4 AL eng 500 LAYI Layton David 225400 Innovations in science and technology education vol-1 Belgium 1986 188p Science 225401 ddc BED 236892 236892 0 0 0 0 AL AL 2025-07-29 Management Books 30.00 0 500 LAYI BED02211 2025-07-29 16:55:13 2025-07-29 BK