Arntz, G. and K. Broos. Symbolen voor onderwijs en statistiek
Symbols for education and statistics. 1928-1965 Wenen-Moskou-Den Haag/ Vienna-Moscow-The Hague. (The Hague, M. Spruijt, 1979). (16) lvs w. ill. text, followed by 117 plates w. num. symbols, orig. ring binder w. title label on spine and on front side, 4to.
Title a bit yellowed, good copy. Rare.