Descripción o resumen: This volume contains a selection of papers analyzing language transfer, a phenomenon which results from language contact in bilingual and multilingual language acquisition and learning contexts. The main focus of the volume is on the lexical aspects of language transfer. This is an impressive collection of serious thought and critical analysis ranging from broad issues and their implications to more specific problems. The papers are firmly grounded in significant previous research and they present good summaries of much recent work as well. I found the topics to be intriguing, the research to be rigorous and valuable to the field, and the findings and analyses outlined in the papers as a whole to represent a perspective that is relevant and useful. This is a significant contribution to the field of second language acquisition studies. Useful to both psycholinguists and to foreign language teachers interested in language learning processes.