Paul A. Johnsgard/ Thomas D. Mangelsen (PHT)
(1)
Ron Hirschi/ Thomas D. Mangelsen (ILT)/ Deborah Cooper (ILT)
(1)
Ron Hirschi/ Thomas D. Mangelsen (PHT)
(1)
Thomas D. Mangelsen (PHT)
(1)
Thomas D. Mangelsen (PHT)/ Jane Goodall (FRW)
(1)
Thomas D. Mangelsen,Todd Wilkinson
(1)
Thomas D. Mangelsen/ Jane Goodall (FRW)
(1)
Thomas D. Mangelsen/ Todd Wilkinson/ Tom Brokaw (FRW)
(1)