id,agency_id,docket_id,title,document_type,subtype,posted_date,posted_year,posted_month,comment_start_date,comment_end_date,last_modified,fr_doc_num,open_for_comment,withdrawn,object_id EPA-HQ-OAR-2001-0017-3361,EPA,EPA-HQ-OAR-2001-0017,Tabs 1 - 11: Letters and Articles,Supporting & Related Material,Letter,2012-03-29T04:00:00Z,2012,3,,,2012-03-29T11:04:43Z,,0,0,0900006480fe291a EPA-HQ-OAR-2001-0017-3360,EPA,EPA-HQ-OAR-2001-0017,Techniques for High-Quality Ambient Coarse Particle Mass Measurements,Supporting & Related Material,Publication - Copyrighted Materials,2012-03-28T04:00:00Z,2012,3,,,2012-03-28T16:40:05Z,,0,0,0900006480fe2919