幼儿园计算贴绒教具（二） You'eryuan jisuan tierong jiaoju (er) Designer Designer unknown (未知) Date 1982, July Publisher Shaonian ertong chubanshe (少年儿童出版社) Size 77x53 cm. Call nr. BG E13/30 Collection Landsberger collection Link to IISH catalog https://search.iisg.amsterdam/Record/933045
