Abrams Threatens to Limit The Cases He Will Appeal>
NYS Attorney General Robert Abrams says he may cease practice of representing state agencies in judicial and administrative proceedings if he is doubtful about merits of state's case; Gov Carey, responding through his counsel, Richard A Brown, claims that such a move would raise 'serious constitutional, statutory and ethical questions'; temporary truce is reached when Abrams agrees to let Brown, a former State Supreme Court justice, act as arbiter of any conflict between Abrams and any state agency; Abrams made his initial remarks in interviews with Albany TimesâUnion and Knickerbocker News; Abrams illus (M)

