kw.\*:("EMISSION BALMER")
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ON CIRCUMSTELLAR GAS EMISSION AMONG PRE-MAINSEQUENCE STARS IN IC ORIONIS AND NGC 2264SMITH MA.1972; ASTROPHYS. J.; U.S.A.; DA. 1972; VOL. 176; NO 3, PART 1; PP. 617-622; BIBL. 11REF.Serial Issue