@BOOK{NAP18646, author = "National Research Council", title = "Techniques for the Study of Primate Population Ecology", doi = "10.17226/18646", url = "https://nap.nationalacademies.org/catalog/18646/techniques-for-the-study-of-primate-population-ecology", year = 1981, publisher = "The National Academies Press", address = "Washington, DC" }