I am selling this book which is in good condition:

Data Communications, Computer Networks and OSI by Fred Halsall, Open Systems

Second Edition

I always strive to post my items the day following payment is received

GUARANTEES:

I guarantee to leave you feedback.

I strive to post all my items on the day after payment is received.

If you are not happy with your item, then you can return it to me for a full refund.