633.1
Gru
T
Grummer , Gerhard 
Rice ; irrigation , preparation of land , cultivation and after-cultivation, wood control , manuring and fertilising , plant protection , processing  and use , by - products. (Tr. from the German by Herbert Liebscher . Leipzig) 
Edition Leipzig (c1970) 
182 p. ilus . (algs. color.) 22 cm. 
(Technical fundamentals)
" Bibliography " : p. 171 - 174