"103622207"^^ . "a closed surface with only one side; formed by passing one end of a tube through the side of the tube and joining it with the other end"@en-us . "03622207-n"^^ . . . "Klein bottle"@en-us . . . . . . . . "0"^^ . "Klein bottle"^^ . . . "103487527"@en-us . . . "0"^^ .