@article{oai:repository.dl.itc.u-tokyo.ac.jp:00023878,
 author = {伊藤, 宏},
 issue = {8},
 journal = {生産研究},
 month = {Aug},
 note = {application/pdf},
 pages = {319--323},
 title = {超大口径比写真レンズの現状},
 volume = {8},
 year = {1956}
}