3352. Some remarks on the development of the compound microscopes in the 19th century / by P.H. van Cittert and J.G. van Cittert-Eymers. - Amsterdam : North-Holland Publishing Company, 1951. p.[73]-80 : graf., tab. : 26 cm. - . - Uit: Proceedings Koninklijke Nederlandse Akademie van Wetenschappen, Series B. - Vol. 54, no. 1 (1951) PK : LXIV E 162

3352. Some remarks on the development of the compound microscopes in the 19th century / by P.H. van Cittert and J.G. van Cittert-Eymers. - Amsterdam : North-Holland Publishing Company, 1951. p.[73]-80 : graf., tab. : 26 cm. - . - Uit: Proceedings Koninklijke Nederlandse Akademie van Wetenschappen, Series B. - Vol. 54, no. 1 (1951) PK : LXIV E 162