庫馬

印度吠陀數學速解法= = Vedic mathematics for intelligent guessing by pradeep kumar / by: 庫馬; 印度; 羅倩宜 (Language materials, printed)

印度吠陀數學秒算法 / by: 印度; 羅倩宜; 庫馬 (Language materials, printed)