TY - SER AU - Volkmer-Ribeiro,C. AU - Machado,V.de S. TI - Freshwater sponges (Porifera, Demospongiae)indivators of some coastal habitats in South America: redescriptions and key to identification KW - ESPONJA KW - AMBIENTE BENTICO KW - LITORAL KW - OCENAO KW - LAGOA KW - ÁGUA DOCE ER -