Chà Ângbo sallim kyà Ângje is a Korean book on agriculture compiled by Yu Chungnim (æ³éÂÂè¨) as revised and enlarged from the Sallim kyà Ângje written by Hong Mansà Ân (洪莸 1643~1715). Yu Chungnim was a physician during the reign of King Yeongjo (1724âÂÂ1776) of the Joseon Dynasty and completed writing the manuscript book in 1766. It consists of 16 volumes in 12 books. The title is loosely translated into "Revised Farm Management".