Mario Samuel Fernandez R Fisica Fundamental - Tercero 8va Edicion Full __link__

It looks like you're asking for a post about the book (likely referring to a physics textbook for 3rd year of secondary school / high school, 8th edition).

Física Fundamental Mario Samuel Fernández R. is a long-standing educational textbook primarily used in It looks like you're asking for a post

For third-year basic education students in Guatemala and across Latin America, Física Fundamental it was a gatekeeper.

estudio de objetos bajo la influencia de la gravedad. It looks like you're asking for a post

To the rest of his third-year class, it was just a textbook by Samuel Fernández R. To Mario, it was a gatekeeper.