Reports on three surveys of Australian Aboriginal language use, undertaken to determine the language groups' needs for translation and literacy projects, are presented. "Communicability of Some Western Desert Communilects" by K. C. Hansen evaluates mutual intelligibility between languages and dialects in that region, and addresses the complicating factor of bilingualism: how much of the intelligibility is due to linguistic similarity and how much to contact between language groups. "Report on Survey of the Central Northern Territory" by David Glasgow describes a more general linguistic survey to determine the locations and numbers of speakers of several language groups and to answer some preliminary questions about language usage. "Observations on Language Change at Hope Vale" by Noreen Pym reports on a sociolinguistic survey that looked at a single community and addressed questions of language usage: who speaks what, to whom, and in what circumstances, and how people feel about their traditional languages. (MSE)