na INLIS000000000010311 20231202142249 231202||||||||| | ||| |||| || | 979-407-352-0 010-1223010311 id 081 081 Ind l Indonesia. Depdikbud Lomba penelitian ilmiah remaja 1990 Jakarta Balai Pustaka 1991 114 hlm. : ilus. ; 21 cm. R01.40 - R01-1466 Karya Tulis Remaja