Some Introductory Historical Observations
lecture by Ian Courtenay Johnston
Pronunciations
British English
/ˈsʌm ɪntɹədʌktəɹiː hɪˈstɒɹɪkəl ˌɒbzəˈveɪʃnz/Open converterAmerican English
/ˈsʌm ˌɪntɹoʊˈdʌktɚi hɪˈstɔɹɪkəl ˌɑbzɚˈveɪʃənz/Open converter
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