Believe it or not, I am not shilling for Amazon.com, but the Herrero
book (1988) that has been so much discussed here is available from
Amazon.com for $13.56:

http://www.amazon.com/exec/obidos/quicksearch-query/5341-2125372-347019

The Jeff Fair and Lynn Rogers book (1994) is available at:

http://www.amazon.com/exec/obidos/ISBN=1559714123/5341-2125372-347019

The total for these two books, including shipping and tax, is: $37.38

Or order them through your local bookseller. The point is that both of
these books are apparently available. The Amazon.com citations above
will at least give you the publication information that might make it
faster for your bookseller track down the book.

--
Jane Hadley
jhadle at halcyon.com
Seattle, WA