https://openlibrary.org/books/OL2365197M.opds Umpama Batak dohot lapatanna 2023-05-26T14:33:25Z A. N. Parda Sibarani https://openlibrary.org/authors/OL1066528A/A._N._Parda_Sibarani Departemen P. dan K., Proyek Penerbitan Buku Sastra Indonesia dan Daerah Jakarta 1979 263 p. ; In Toba-Batak, with summary in Indonesian. "PPS/Bt/2/78." map https://openlibrary.org/books/OL2365197M 13841448 86940987