Help, i want to use simplicity and difference in sorting

[ANA MARIA FONSECA GUERRERO]

Hello Collaborators, greeting from the Fernando Tamayo Library in Bogotá. I need from you. I have come to this library in which there is already a classification order of knowledge, they have used the Dewey Tables. However, since I have to enter the classification of new books, I want to do it more easily using the Dewey classification.
The problem I have is that this simplicity that I want to apply to the classification would leave me with several titles of works that are different, with the same classification number and I want them to be differentiated. My question to you is how can I classify from Dewey with simplicity but creating differences between the titles of works?
Sorry, I don't speak English and I had to use the translator. Thank you

Anamaría Fonseca Guerrero...

[Charles Campbell]

Use números de Cutter o Cutter-Sanborn.

[Barbara Paciotti]

Different books may have the same number but rarely the same author, so we also put the 1st 3 letters of the author's last name after the Dewey number, as in 599.36 JAM. On the spine label the author's letters are below the Dewey number.

Barbara Paciotti
Dallas TX USA

[ANA MARIA FONSECA GUERRERO]

Thanks ¡ You are The Best