do a sum in proportion

anterior hair line convection microwave ovens crossing warning post cutter-loader bed D-AMPHETAMIX fall out step FWBs gluco-phenetidin ice berg karlstrom's stadial cycle lacampagne limiting test line tuning marine tactical air control system (mtacs) melasmia koshunensis Pozo Azul quake-stricken resorcinum stratified sampling with proportional allocation Velazquez