@misc{indiciae892cb2e3f439, title = {Red glass x-ray spectacles.}, author = {E E GROSSMANN and P R THORNFELDT}, year = {1957}, doi = {10.1001/archopht.1957.00940010479025}, url = {https://pubmed.ncbi.nlm.nih.gov/13457542/}, note = {Source identifier: 13457542} }