ðɪ ˌeɪ θˈɜːtiːn spˌɛsɪfɪkˈeɪʃən wʌz pɹədˈuːst pɹˈaɪɚ tə ðə sˈɛkənd wˈɜːld wˈɔːɹ, kˈɔːlɪŋ fɚðə dɪvˈɛləpmənt əvə nˈuː kɹˈuːzɚ tˈæŋk.
The A13 specification was produced prior to the second world war, calling for the development of a new cruiser tank.