Abundance and origin of the element
deficiency in origin and excess in superficislity
ethic origin and final goal
history origin and development
of the same clan and origin
On Origin and Development of Chinese Flute
Origin and Characteristic
origin and characteristic of acid rain
origin and deduction of formula
origin and domestication
Origin and evolution
起源演化
起源和进化
起源进化
发端与演进
起源与进化
地层水起源与演化
起源与演化
成因与演化
生成与演化
origin and evolution of butterflies
origin and evolution of sex
Origin and geological significance