Oikawa, Saeco

Graphic simplicity = シンプルグラフィックス by: Boku, Sayoko; Oikawa, Saeco; Takamatsu, Celia Sayuri (Language materials, printed) , [edited]

フリーペーパーグラフィックス = Free paper graphics by: Sekimoto, Yasuhiro; Saito, Kaori; Oikawa, Saeco (Language materials, printed) , [edited]