00557nam a2200181Ia 4500 190327s9999||||xx |||||||||||||| ||und|| 75-26345 0-12-166550-X NITIL NITIL 21st 001.6424 C434P Chai, Winchung A Programming standard Cobol Winchung A Chai New York Academic 1976 xviii, 342p. COBOL (Computer program language); Computer science; Programming languages (Electronic computers) Chai, Henry W BKS 54944 54944