1. Sexual selection: birds, decoration Publication: Bethesda, MD : U.S. National Library of Medicine, National Institutes of Health, Health & Human Services, 2009 Subject(s): BirdsSex CharacteristicsBooks
2. [Size variation between male and female aquatic worms] Publication: Bethesda, MD : U.S. National Library of Medicine, National Institutes of Health, Health & Human Services, 2009 Subject(s): RotiferaPolychaetaSex CharacteristicsBooks
