Unlock : listening & speaking skills.
Ostrowska, Sabinaauthor.
Title from disc label.
"B1 English profile"--Container.
"Software developed by Vital Source Technologies, Inc.".
Accompanied by introduction booklet.
System requirements: Windows XP/Vista/7/8 ; Mac OS X 10.6, 10.7, 10.8 and 10.9 ; 1 GB of RAM, 128 MB of graphics memory, 3 GB of free disk space.
Available for use on a standalone workstation within the library for single users. Disc may require installation.