@article{article, title  = {{FILING ISSUES OF PE}},

 url = {{}},

 year = {{1969}},

 month = {{1}},

 author = {{RICHARDS GO}},

 volume = {{35}},

 journal = {{PHOTOGRAMMETRIC ENGINEERING}},

 issue = {{2}},

 pages = {{112-&}},

 note = {{Accessed on 2026/02/05}}}