2193 qcl_brochure pdf general 1578340312 c4d508ec2e910cfddfbc49447b4ad317 32cab03b8eebb3cd9c416ecb549b1fbd820e88309b21f6cde7c234dae66d5988 qcl brochure 2020 01 06 12 51 52 0 132 148 194 54 02 09 17 55 draft release sample pdf application num_pages analyze pdf_pages pdf_2text timings