There's some structure error in that chart (2 bars of G69 missing at the end of the bridge) and also there are no E-7/A or Eb-7/Ab or D9sus chords. It's simply A9 (or A13) and Ab9 (or Ab13). Before going back to G, the bass may play (optional) a D which is the tritone substitute of Ab13. It's certainly not a D9sus!
Never trust fake books (even the so called "legal" ones). I've noticed many errors in many tunes!
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