John Gammack

John Gammack is the author of "Managing Security Issues and the Hidden Dangers of Wearable Technologies", "The Book of Informatics Revised Edition" and "The Book of Informatics".

Books by John Gammack

Managing Security...
Marrington Andrew
Digital download and online: $200.00

The Book of Infor...
Gammack, John
Paperback:

Managing Security...
Marrington Andrew
Digital download and online: $200.00

Managing Security...
Marrington Andrew
Hardback: