2191 qcl_lab_brochure pdf general 1578340314 adb94adea8dc0ffc278acc7fcc589a1a 67e85909d832b23a407a57121cac580be9d38081028cf6fba843b85aa155c1eb qcl lab brochure 2020 01 06 12 51 54 0 207 46 13 232 02 10 15 08 draft release sample pdf application num_pages pdf_pages pdf_2text timings