There are many assumptions, including that these mother grizzlies are indeed “unduplicated.”
This fact heightens the probability that the unduplicated verses should also be assigned to some form of that document.
1620s, "to double," from Latin duplicatus, past participle of duplicare (see duplicate (adj.)). Meaning "make an exact copy" is from 1640s (implied in duplicated). Related: Duplicating. The noun is first recorded 1530s.