TY - GEN AU - Heymisfield, Andrew J. AU - TI - Ice particles observed in a cirroform cloud at -83ÂșC and implications for polar stratospheric clouds KW - PARTICULAS DE GELO NAS NUVENS KW - NUVENS CIRROFORMES KW - MICROFISICA DAS NUVENS ESTRATOSFERICAS KW - 551.574.13 KW - 551.576.11 KW - med KW - fre ER -