Haarlem, De Erven Loosjex, 1913.
8vo (250x165 mm), 60 pages + 2 appendix in separate keaves (II: 4pages ; III: 6 pages), the first appendix is missing. binding : Original printed wrappers. Second cover is missing. Spine glued.
provenance: Blind stamp from Jacob Clay (1882-1955) was a prominent Dutch physicist.
Price : 500 €