ASPEN TECHNOLOGY INC /DE/


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Subsidiaries
EX-21.1
2021-08-18
EX-21.1
2020-12-09
EX-21.1
2019-09-10
EX-21.1
2018-08-08
EX-21.1
2017-08-10
EX-21.1
2016-08-11
EX-21.1
2015-08-13
EX-21.1
2014-08-13
EX-21.1
2013-08-15
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