na INLIS000000000010375 20231202142301 231202||||||||| | ||| |||| || | 010-1223010375 id 081 081 Dep l Depdikbud Lomba penelitian ilmiah remaja 1986 Jakarta Balai Pustaka 1989 138 hlm. : ilus. ; 21 cm. R01.40 - R01-1459 Karya Tulis Remaja