na INLIS000000000010337 20231202142253 231202||||||||| | ||| |||| || | 979-407-193-5 010-1223010337 id 081 081 Ind l Indonesia. Depdikbud Lomba penelitian ilmiah remaja 1987 Cet.1 Jakarta Balai Pustaka 1989 102 hlm. : ilus. ; 21 cm. R01.40 - R01-1467 Karya Tulis Remaja