The Library now has the Oxford Handbooks in Linguistics Online. To find them, search the Library Primo Catalog by "Oxford Handbook in Linguistics" or follow this link.
The Library also has Blackwell Handbooks in Linguistics
The Blackwell Guide to Research Methods in Bilingualism and Multilingualism by 
Innovative Research and Practices in Second Language Acquisition and Bilingualism by 
The Handbook of Computational Linguistics and Natural Language Processing by 
The Cambridge handbook of language contact. Volume 2, Multilingualism in population structure by The Cambridge handbook of language contact. Volume 1, Population movement and language change by 
The Handbook of Intercultural Discourse and Communication by 
The Oxford Handbook of Experimental Semantics and Pragmatics by Semantics. John Saaed. Malden, Mass. : Wiley-Blackwell, 2009.
Handbook of Research on Socio-Cultural and Linguistic Perspectives on Language and Literacy Development by 
The International Encyclopedia of Language and Social Interaction by Introducing Sociolinguistics by 
