Nongnimŏp hubang yŏn'gwan sanŏp ŭi chŏllyakchŏk palchŏn pangan = Development directions for backward linkage industries in the agriculture, forestry and fisheries : with reference to fertilizer and pesticides
Nongch'on kongdong sisŏl ŭi yuhyuhwa silt'ae wa hwaryong chŭngdae pangan = A study onthe actual conditions and improving utilization of idle public facilities in rural areas