I give private English tutoring to learners who want to improve their spoken or written English. Be sure to get in touch if you'd like to try my service or have questions.
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My name is Mario R. S. I have a bachelor's degree in Chemistry Education. I was a Chemistry teacher in Venezuela from 1997 to 2000. I have experience in Clinical Research. I have experience in the Pharmacy Industry because from 2000 to 2004, I was a Supervisor of HPLC and GC Section of Quality Control Department and Validation activities for Pharmaceutical Process in Vargas S.A. Laboratories.