1- 1957- Semt . COMMUNICATIONS OF THE RESEARCH INSTITUTE OF THE SPA . GENERAL SERIES ( INDONESIA , Medan ) A : 69-72 , 74-76 ( 1960-62 ) COMMUNITY DEVELOPMENT ( TRAINING MATERIAL - SERIES A ) ( EE.UU. , Washington , D.C. ) Men .

A : 1-6 ( 1957-1962 ) ; 7 , 2 ( 1963 ) ; 9 , 1 ( 1965 ) COMMUNICATIONS OF THE RESEARCH INSTITUTE OF THE SPA . GENERAL SERIES ( INDONESIA , Medan ) A : 69-72 , 74-76 ( 1960-62 ) COMMUNITY DEVELOPMENT ( TRAINING MATERIAL - SERIES A ) ( EE ...

COMMUNICATIONS OF THE RESEARCH INSTITUTE OF THE SPA . GENERAL SERIES ( Indonesia ) 1091 ) No. 1- 1960- Sumatra Planters Association , Medan . C. No. 69-76 ( 1960-62 ) x COMMUNICATIONS OF THE RESEARCH INSTITUTE OF THE SPA . RUBBER SERIES ...