ASPECTS OF PERMIAN PALEOBOTANY AND PALYNOLOGY .4. THE CONIFER ORTISEIA FLORIN FROM THE VAL GARDENA FORMATION OF THE DOLOMITES AND THE VICENTINIAN ALPS (ITALY) WITH SPECIAL REFERENCE TO A REVISED CONCEPT OF THE WALCHIACEAE (GOPPERT) SCHIMPER
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10.1016/0034-6667(84)90043-5