{"e":{"id":315009,"source":"ia_catalogofcopyr3151213libr","title":"ADVANCED ALGEBRA","header":"linear equations in one unknown. 31 min","year":null,"reels":null,"feet":null,"sound":false,"credits":null,"notes":[],"line_start":765,"line_end":768,"source_text":"linear equations in one unknown. \n\n31 min. © 27Feb61 (in notice: \n1960); MP11138. ","source_meta":{"name":"Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1961","url":"https://archive.org/details/catalogofcopyr3151213libr","cite":"Internet Archive catalogofcopyr3151213libr (OCR text)","file":"/root/projects/publicreel/data/raw/cce_third_series/1961_catalogofcopyr3151213libr_djvu.txt"},"ia_items":[],"ia_lookup":[]},"regs":[{"id":333916,"entry_id":315009,"reg_number":"MP11138","series":4,"see_also":[],"reg_class":"MP","published":true,"claimant":"27Feb61 (in notice","author":null,"deposit":null,"reg_date":null,"part":null,"part_title":null,"source_line":767,"raw":"linear equations in one unknown. 31 min © 27Feb61 (in notice: 1960); MP11138","flags":["date_unreadable","title_missing"],"status":"uncertain","pd_date":null,"reason":"no registration date parsed from the catalog entry","match_kind":null,"match_confidence":null,"title_similarity":null,"renewals":[],"window":null,"window_volumes":[]}]}