Variation of contrast in electron microscope images with size of objective aperture /
Coupland, J. H.
Variation of contrast in electron microscope images with size of objective aperture / by J. H. Coupland - [S.l. : s.n.], 1956 - 642-646 p. : ill. ; 25 cm. - Proceedings of the Physical Society. Section B ; 69 .
Variation of contrast in electron microscope images with size of objective aperture / by J. H. Coupland - [S.l. : s.n.], 1956 - 642-646 p. : ill. ; 25 cm. - Proceedings of the Physical Society. Section B ; 69 .