PN C99021 ArkusZ03-1973 Defects of light sensrtive photographic materials Oharacteristic of defecits of white--and-iblack materials on flexible and opa?ue film base
1973PN C99021 ArkusZ03-1973 Defects of light sensrtive photographic materials Oharacteristic of defecits of white--and-iblack materials on flexible and opa?ue film base