@misc{indiciaeed5ed59e8640, title = {Directional handle for Zeiss operating microscope.}, author = {D Eibling and H W Smith}, year = {1979}, doi = {10.1288/00005537-197904000-00014}, url = {https://pubmed.ncbi.nlm.nih.gov/431265/}, note = {Source identifier: 431265} }