The Thai basic course consists of 128 lessons in 15 volumes. The basic course is designed to train native English language speakers to Level 3 proficiency in comprehension and speaking and Level 3 proficiency in reading and writing Thai. The texts are intended for classroom use in the Defense Language Institute's intensive programs, using accompanying audio tapes.

The Thai basic course consists of 128 lessons in 15 volumes. The basic course is designed to train native English language speakers to Level 3 proficiency in comprehension and speaking and Level 3 proficiency in reading and writing Thai. The texts are intended for classroom use in the Defense Language Institute's intensive programs, using accompanying audio tapes.

The Thai basic course consists of 128 lessons in 15 volumes. The basic course is designed to train native English language speakers to Level 3 proficiency in comprehension and speaking and Level 3 proficiency in reading and writing Thai. The texts are intended for classroom use in the Defense Language Institute's intensive programs, using accompanying audio tapes.