ANSI PH2.19
ANS PH219 1986-JAN-01 Photography Senstometry - Densty Measurements - Geometrc Condtons for Transmsson Densty Revson and Consoldaton of ANS PH219-1976 and PH220-1984
ANS PH219 1986-JAN-01 Photography Senstometry - Densty Measurements - Geometrc Condtons for Transmsson Densty Revson and Consoldaton of ANS PH219-1976 and PH220-1984