蓋夫(Gaff, Jackie)

探索地球的現象 by: 佛斯( Chris Forsey); 傑克.蓋夫 (Jackie Gaff)原著; 桂台華 (企劃總編); 蓋夫(Gaff, Jackie) (Language materials, printed)

揭開星球的真相 by: 佛斯(Chris Foresy); 傑克.蓋夫(Jackie Gaff); 桂台華 (企劃總編); 蓋夫(Gaff, Jackie) (Language materials, printed)

交通工具的認識 by: 佛斯(Chris Foresy); 傑克.蓋夫(Jackie Gaff); 桂台華 (企劃總編); 蓋夫(Gaff, Jackie) (Language materials, printed)