Microsoft Lync server 2010 unleashed

by Lewis, Alex
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Microsoft Lync server 2013 unleashed

by Lewis, Alex
Published 2013

Microsoft Windows Server 2003 Unleashed, R2 Edition

by Morimoto, Rand, Noel, Michael, Lewis, Alex
Published 2006

Unleashed Skype for business

by Lewis, Alex, Richard, Pat, Sharp, Phil, Maximo, Rui
Published 2017