| The population bomb PR Ehrlich (No Title), 1971 | 8330 | 1971 |
| Butterflies and plants: a study in coevolution PR Ehrlich, PH Raven Evolution, 586-608, 1964 | 6012 | 1964 |
| Impact of Population Growth: Complacency concerning this component of man's predicament is unjustified and counterproductive. PR Ehrlich, JP Holdren Science 171 (3977), 1212-1217, 1971 | 5614 | 1971 |
| Accelerated modern human–induced species losses: Entering the sixth mass extinction G Ceballos, PR Ehrlich, AD Barnosky, A García, RM Pringle, TM Palmer Science advances 1 (5), e1400253, 2015 | 5338 | 2015 |
| Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines G Ceballos, PR Ehrlich, R Dirzo Proceedings of the national academy of sciences 114 (30), E6089-E6096, 2017 | 3212 | 2017 |
| Extinction: the causes and consequences of the disappearance of species P Ehrlich, A Ehrlich | 2985 | 1981 |
| Human appropriation of the products of photosynthesis PM Vitousek, PR Ehrlich, AH Ehrlich, PA Matson BioScience 36 (6), 368-373, 1986 | 2801 | 1986 |
| Population, resources, environment PR Ehrlich, AH Ehrlich San Francisco, 1970 | 2709 | 1970 |
| The population explosion PR Ehrlich, AH Ehrlich | 2298 | 1990 |
| Human appropriation of renewable fresh water SL Postel, GC Daily, PR Ehrlich Science 271 (5250), 785-788, 1996 | 2183 | 1996 |
| Birder's handbook P Ehrlich, DS Dobkin, D Wheye Simon and Schuster, 1988 | 2146 | 1988 |
| CRAM A Daily, P Deere, K Shomaker, LM Smith, E TeBeaux, SD Wade, ... SSB 1, 1, 1997 | 1767 | 1997 |
| The value of nature and the nature of value GC Daily, T Söderqvist, S Aniyar, K Arrow, P Dasgupta, PR Ehrlich, ... Science 289 (5478), 395-396, 2000 | 1674 | 2000 |
| Human Population and the Global Environment: Population growth, rising per capita material consumption, and disruptive technologies have made civilization a global ecological force JP Holdren, PR Ehrlich American scientist 62 (3), 282-292, 1974 | 1377 | 1974 |
| Biodiversity studies: science and policy PR Ehrlich, EO Wilson Science 253 (5021), 758-762, 1991 | 1366 | 1991 |
| Are we consuming too much? K Arrow, P Dasgupta, L Goulder, G Daily, P Ehrlich, G Heal, S Levin, ... Journal of Economic Perspectives 18 (3), 147-172, 2004 | 1264 | 2004 |
| Mammal population losses and the extinction crisis G Ceballos, PR Ehrlich Science 296 (5569), 904-907, 2002 | 1262 | 2002 |
| Differentiation of populations: Gene flow seems to be less important in speciation than the neo-Darwinians thought. PR Ehrlich, PH Raven Science 165 (3899), 1228-1232, 1969 | 1232 | 1969 |
| Ecosystem consequences of bird declines ÇH Şekercioğlu, GC Daily, PR Ehrlich Proceedings of the National Academy of Sciences 101 (52), 18042-18047, 2004 | 1209 | 2004 |
| Human natures: Genes, cultures, and the human prospect PR Ehrlich Penguin, 2001 | 1119* | 2001 |
Gerardo CeballosProfesor de Ecologia (UNAM)כתובת אימייל מאומתת בדומיין miranda.ecologia.unam.mx