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Carl Zeiss, West Germany:
1969    The Zeiss-Nomarski Differential Interference Equipment for Transmitted-Light Microscopy (R.D. Allen, G.B. David, G. Nomarski)
1969    Photomicrographic Camera with Ikophot M Brief Instructions
1970    Nomarski Differential Interference-Contrast Microscopy, Walther Land and Heinz Gundlach, Zeiss Information No. 77
1981    Microscopy from the Very Beginning
1998    Zeiss 3D Microscopy for Axiovert 100-135-135M
1999    Zeiss Axiovert-100, 135 and 135M operating instructions
Undated     Spectrophotometer PMQ II Instructions for Use
Undated     Interference-contrast Equipment after Nomarski
Undated     Inverted Microscope Invertoscope D Operating Instructions

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