However I think I have found what you are really after.
probably"Chemical Engineering and Chemical Calculatons"... calculos quimicos benson pdf
I'm assuming you are referring to the book "Chemical Calculations: The Hartree-Fock Method with the Chemical Bond as a Guiding Concept" by H. Benson Harris (also known as Harold Benson) but likely you are referring to Frank Benson or more likely still, possibly Hugh C. Benson or possibly just plain Benson in some document not easily referenced. However I think I have found what you are really after
The second "edition or so" By Frank Benson and possibly other authors titled calculos quimicos benson pdf
by Harris.
But I think I actually found..
I think likely By Benson