Shounen daihakase : hyakka jitsueki chishiki houko

Shounen hyakka houkan

Chishiki no kinko : shounen bungaku

Nihon danji : shounen houko

Hyakka daijii : saishin chishiki

Nichiyou hyakka chishiki no hana

Shounen hyakka jii

Shounen hyakka zensho

Shounen hyakka jiten

Shounen seinen daihouten : chishiki kinnou

Shounen seinen daihouten : chishiki kinnou

Gendai seinen shounen hyakka jiten

Shizenkai no chishiki : shounen kyouiku

Katei engei hakase : goraku jitsueki

Monoshiri sensei : joushiki hyakka

Monoshiri sensei : joushiki hyakka

Monoshiri sensei : joushiki hyakka

Monoshiri sensei : joushiki hyakka

Shounen rika hakurankai

Hyakka jitsuyou chouhou bunko

Gendai jitsugyou hyakka houten

Nenshousha shuushoku no yobiteki chishiki

Saishin kagaku no chishiki : jikken ouyou

Shounen jikken kougei 100shu

Shounen takara sagashi monogatari