Quizzes, tests, exercises and puzzles for English as a Second Language (ESL), English as a foreign language (EFL), Teaching EFL (TEFL), Test of EFL (TOEFL), English for speakers of other languages (ESOL), Teaching ESOL (TESOL), TOEIC.
Invention : satellite, successful artificial earth
Year : 1957
Inventor : sergey korolyov, et al.
Country : ussr. .. More >>