COURT RESTRICTS NEWS SUBPOENAS
US Appeals Ct, San Francisco, rules that Govt must show 'compelling need' for evidence before ordering newsman to testify in secret grand jury proceeding, decision supporting refusal of reporter E Caldwell (NY Times) to testify in grand jury investigation of Black Panther party; reverses Fed Dist Judge Zirpoli's June 5 contempt judgment against Caldwell and order requiring Caldwell to appear before grand jury; holds that if jury has power to compel newsman to make his data available to it, then jury and Justice Dept have power to appropriate his findings to their own behalf, thus making newsman an 'investigative agent' of Govt; says newsmen should be free to make own investigations and to protect their own methods; decision appears to follow Atty Gen Mitchell's Aug guidelines for subpoenaing newsmen except that ct rather than Atty Gen would decide whether conditions were met; Caldwell's atty A Amsterdam comments