魏怡華

今日資源 : 岩石與礦物 = Rocks and minerals / by: Whyman, Kathryn; 惠孟; 陳靜宜 等; 魏怡華 (Language materials, printed)

石油 = Oil / by: 哈克斯 ((Hawkes, Nigel)); 魏怡華 (Language materials, printed)

今日能源 : 天然氣 = Gas / 3 by: Arnold, Guy.; Ron Hayward Associates; 阿諾德; 魏怡華 (Language materials, printed)

今日資源 : 油類 = Oils / by: Mercer, Ian; 莫瑟; 陳靜宜 等; 魏怡華 (Language materials, printed)

今日資源 / by: 懷曼 ((Whyman,Kathryn)); 魏怡華 (Language materials, printed)