Basically you do a three level sort where lower levels are used to disambiguate ties. A more effective wheel was invented some decades ago: 
sort -k 9 -k 32 -k 33 <other options> <infile >outfile

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Edit: -d is the field delimiter for e. g. cut, but not for sort.

In reply to Re: memory problems parsing large csv file by NiJo
in thread memory problems parsing large csv file by turquoise_man

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