26 1 50 Jilid 10 Irlandia - Karet Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 11 Karnaval - Kerete Api Bawah Tanah Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 18 Perjalanan Ruang Angkasa --- Pohon Mesirah Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 2 Anggrek - Bahan Bakar Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 20 Roosevelt - Sepeda Motor Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 21 Serangga - Tawon Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 22 Teater - Tupai Tanah Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Barat Jauh Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Dari Gua Sampai Gedung Pencakar Langit Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Hari Raya di Seluruh Dunia Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Ibu Kota yang Besar Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Indeks Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Keajaiban Alam Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Penemuan Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Perjalanan Menembus Waktu Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Seni dari Abad ke Abad Primary Author mixed material 9798087275 Jakarta : Widyadara 1990 Jilid 1 Abad pertengahan - Anggar Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 13 Kupu - Kupu --- Marconi Primary Author mixed material 0717281620 Dadi Pakar 1983 Jilid 14 Margasatwa - Elektronik Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 16 Other - Percetakan Primary Author mixed material 0717281620 Dadi Pakar 1983 Jilid 17 Pendidikan - Perintis Primary Author mixed material 0 Jakarta : Widyadara 1983 Jilid 19 Pohon Paku - Roket Primary Author mixed material 0717281620 Jakarta : Widyadara 1983 Jilid 24 Indeks Primary Author mixed material 0717281620 Dadi Pakar 1983 Batuan dan Mineral Primary Author mixed material 9798087127 Jakarta : Widyadara 1990 Bintang dan Planet Primary Author mixed material 9798087135 Jakarta : Widyadara 1990 Dunia Tumbuhan Primary Author mixed material 979808716X Jakarta : Widyadara 1990