Thomas B. HildebrandtRobert HermesNancy C. PrattGuido FritschSteffen BlottnerDennis L. SchmittParntep RatanakornJanine L. BrownWolfram RietschelFrank GöritzLeibniz-Institut fur Zoo- und WildtierforschungDisney's Animal KingdomMissouri State UniversityMahidol UniversityConservation and Research Center (National Zoo)Wilhelma Zoological and Botanical Gardens2018-09-072018-09-072000-01-01Zoo Biology. Vol.19, No.5 (2000), 333-345073331882-s2.0-0034556526https://repository.li.mahidol.ac.th/handle/20.500.14594/25831Mahidol UniversityAgricultural and Biological SciencesUltrasonography of the urogenital tract in elephants (Loxodonta africana and Elephas maximus): An important tool for assessing male reproductive functionArticleSCOPUS10.1002/1098-2361(2000)19:5<333::AID-ZOO5>3.0.CO;2-A