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THE REPRODUCTIVE ORGANS OF CALLISTOPHYTON. (ABSTRACT).STIDD BM; HALL JW.1970; AMER. J. BOT.; USA; 1970(7), VOL. 57, NUM. 0006-002 , P. 757 A 758Miscellaneous

NUCELLANGIUM: GAMETOPHYTIC STRUCTURE AND RELATIONSHIP TO CORDAITES.STIDD BM; COSENTINO K.1976; BOT. GAZ.; U.S.A.; DA. 1976; VOL. 137; NO 3; PP. 242-249; BIBL. 20 REF.Article

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