Peremadjaan tanaman karet di Sumatera Timur
By: oleh Mangaradja Bona Halomoan Sitanggang.
Published: 1964
Language: ind
Number of pages: 134
Subjects: Hevea -- Indonesia -- Sumatera Utara.
Notes: Thesis (M.A.)--Universitas H.K.B.P. Nommensen.
Bibliography: leaves 132-133.
Typescript (carbon copy)
Vita.