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Captain Underpants and the Perilous Plot of Professor Poopypants
Captain Underpants #4
Captain Underpants and the Perilous Plot of Professor Poopypants (2000)
Dav Pilkey
Captain Underpants and the Perilous Plot of Professor Poopypants is a 2000 book by Dav Pilkey and is book #4 in the Captain Underpants series.