I have the original copy and it was great and thank you for deciding to put the edited version online for us to use it. 
Thank you 

On Jan 10, 2017, at 8:51 PM, Howard Spero <[log in to unmask]> wrote:

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Hi Zach:

Thank you for posting your book online for everyone to use. I guess I was one of the ten people who purchased your book….:)  All the best.


Professor Howard Spero
Director, Stable Isotope Laboratory
Department of Earth & Planetary Sciences
University of California Davis
Davis CA 95616

Rm 3131 Earth and Physical Sciences Bldg.

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Geology Stable Isotope Laboratory:


On Jan 10, 2017, at 16:47, Zachary Sharp <[log in to unmask]> wrote:

Dear Isotopers,

I decade back I wrote a textbook to accompany an introductory stable isotope course. The book "Principles of Stable Isotope" geochemistry was considered a failure by the publisher because the volume was too low and they have discontinued it. If you try to find it on Amazon, it is insanely expensive. 

I have gotten the rights back to the book and am in the process of updating it. I plan on putting it online free to all. The nice thing about this idea -- besides the price -- is that having it online allows for it to be constantly modified to remain up-to-date. I plan on having it all done in the next one or two months. In the meantime, I would like to offer it to anyone who might be considering using it for teaching their stable isotope course this semester. It's not completely finished, but it is usable. 

Please feel free to contact me if you would like the PDFs.