{"type": {"key": "/type/edition"}, "publish_date": "1971", "publish_country": "mau", "languages": [{"key": "/languages/eng"}], "title": "Central Area Systems Study, volume I.", "authors": [{"key": "/authors/OL6888726A"}], "oclc_numbers": ["1466596"], "lc_classifications": ["HE4491.B7 M388 v. 1"], "series": ["PB-204 468"], "subject_places": ["Boston Metropolitan Area (Mass.)"], "subjects": ["Transit systems"], "publishers": ["For sale] by National Technical Information Service, Springfield, Va."], "publish_places": ["Boston"], "pagination": "4 v. (various pagings)", "source_records": ["marc:harvard_bibliographic_metadata/20220215_043.bib.mrc:270778649:905"], "works": [{"key": "/works/OL45775170W"}], "key": "/books/OL62306359M", "latest_revision": 1, "revision": 1, "created": {"type": "/type/datetime", "value": "2026-07-14T20:12:44.562952"}, "last_modified": {"type": "/type/datetime", "value": "2026-07-14T20:12:44.562952"}}