Thanks for reporting back.
I also couldn't find the book as ebook anywhere. A realy pity, I'd have liked to read that story...the description made me curious. On the up side I found lots of other interesting SciFi titles that I could read in the near future...so all is not lost...
I found that the "Specialist" short story is/was contained in a book named "Untouched by human hands" which contained 13 short stories. It appears to be out of print...