余德發

Overview

Works:	1 works in 2 publications in 1 languages

Titles

大豆有機栽培 by: 陳任芳; 余德發 (Language materials, printed) , [撰稿]

食用甜玉米有機栽培 by: 余德發; 陳任芳 (Language materials, printed) , [撰稿]

Subjects