National Football League | National Register of Historic Places | National Hockey League | England national football team | National Basketball Association | National Science Foundation | National Geographic | National Trust | National Endowment for the Arts | National Geographic Society | Argentina national football team | National Trust for Places of Historic Interest or Natural Beauty | National Park Service | Cape Verde | National League | Australian National University | National Guard | National Geographic Channel | National Institutes of Health | National Guard of the United States | National Collegiate Athletic Association | Hyde Park | Central Park | United States National Research Council | National Portrait Gallery | National Academy of Sciences | Indian National Congress | South Park | United States men's national soccer team | National Research Council |
The ant-Vachellia system involving this species has been studied by ecologists like Daniel Janzen in Palo Verde National Park and Santa Rosa National Park, both in Guanacaste Province, Costa Rica.