SELECT baltimore_group FROM table_name_13 WHERE virion_shape = "icosahedral" AND envelopment = "non-enveloped" AND replication_site = "cytoplasm" AND family = "astroviridae"
Kelompok Baltimore mana yang memiliki bentuk lingkungan icosahedral, bereplikasi dalam sitoplasma, tidak divelop, dan dari keluarga Astroviridae?
CREATE TABLE table_name_13 (baltimore_group VARCHAR, family VARCHAR, replication_site VARCHAR, virion_shape VARCHAR, envelopment VARCHAR)