Ariëns Kappers, C.U.. 
Ariëns Kappers, C.U.. 
The spread of primitive humanity and its links with the more differentiated races, as revealed by cephalic and cranial index curves. Vols. I & II.
Amsterdam; n.d. (ca. 1950); Koninklijke Akademie van Wetenschappen; softcover, stapled; reprinted from "Proceedings Vol. XXXIX, no. 10, 1936 & vol. XL, no. 1, 1937"; figures, folding diagrams/ tables; 12 & 12 pp.
The spread of primitive humanity and its links with the more differentiated races, as revealed by cephalic and cranial index curves. Vols. I & II.
Amsterdam; n.d. (ca. 1950); Koninklijke Akademie van Wetenschappen; softcover, stapled; reprinted from "Proceedings Vol. XXXIX, no. 10, 1936 & vol. XL, no. 1, 1937"; figures, folding diagrams/ tables; 12 & 12 pp.
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