Sintesia de la (z) - 6 - eneicosen - 11 - ona.

Tesis (Maestría en Ciencias en Especialidad en Química Orgánica) UANL

New method of learning to read write and speak the spanish language; with an appendix : y M. Velazquez and T. Simonne

UANL

Critical pronouncing dictionary and expositor of the english language; in which the meaning of every word is explained, and the sound of every syllable distinctly shown...

UANL

A practical grammar of the english language

UANL