ISBN Student's Book w/ CD-ROM 978-0-521-75584-9 Audio CDs (4) 978-0-521-75585-6 Audio Cassettes (4) 978-0-521-75586-3 Student CD-ROM (Win/Mac) 978-0-521-75588-7 Book/CD-ROM/Audio CD pack 978-0-521-75587-0

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