All of the text on this website is my intellectual property.
You are free to copy, and distribute the text, for non-commercial purposes
only, and you must cite this website if you use any of the text in a derivative work.
Commercial use of the text must be restricted to small quotations and should cite
this website.
All of the maps and diagrams on this website belong to me, and are free for anyone
to use under the following conditions. They are licenced under a
Creative
Commons Attribution-ShareAlike 2.5 Licence. This is a summary of the licence:
You are free:
- to copy, distribute, and display the images
- to make derivative images
- to make commercial use of the images
Under the following conditions:
- Attribution. You must attribute the images to Richard Powell, or to
this website.
- Share Alike. If you alter, transform, or build upon these images, you may
distribute the resulting images only under a license identical to this one.
- For any reuse or distribution, you must make clear to others the license
terms of these images.
- Any of these conditions can be waived if you get permission from the
copyright holder.
These data are all
copyrighted
material and are subject to the following restrictions on their use.
Scientists and educators who are using these data for research, teaching purposes
and other non-profit activities may freely use these data and we only request
that you acknowledge the source in any publication.
Commercial use of these data is prohibited without permission.
