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This page is for people located in Low Income or Lower-to-Middle Income Countries (LMIC).
People located in these countries do not have the same purchasing power as elsewhere, so I've reduced the price to make the book more accessible. It's 100% the same as the full priced version and gets al the same updates. It's only applicable to the personal use licence however - companies still pay the usual rates ;).
I'm operating on an honour system, so if you aren't located in an LMIC please see the regular sales page .
To see if your country is on the LMIC list, please look for it on this list:
PDF and screen-readable HTML. Free updates to corrections & any new chapters that get added to this edition.