это уникальная коллекция часть их р

это уникальная коллекция часть их работ, сохранившаяся в музее естественной истории Гарвардского университета.

Results (English) 1:

It is a unique collection of their works, preserved at the Museum of natural history at Harvard University.

Results (English) 2:

It is a unique collection of their works preserved in the Museum of Natural History at Harvard University.

Results (English) 3:

This is a unique collection of their works, preserved in the museum of natural history of Harvard University.