S.l.n.d., (ca. 1910). 32 pp. 8vo (15,5 x 24,3 cm.). Original prinetd wrappers. With numerous illustrations.
Reference : 1642
Apparently an offprint from a larger catalogue. Dealing with infra-red rays and radiation and a variety of lamps used in light therapy.
Sylco livres anciens - antiquarian books
Mme SYLVIA HALLEMANS
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