6855a68f_d_BIOS___Complementary_Systems___and_Observation_System__BIOS_
[0] Data Layer Single layer; records within the layer are aggregations of information from numerous data sources including field survey forms, specimens, environmental documents, published literature
Multiple layers; records within each layer are from a single data contributor
Comparison of CNDDB and BIOS - Complementary Systems
Biogeographic Information and Observation System (BIOS)