Browse the USGS Publication Warehouse
Publications for publication type Report and publication subtype Federal Government Series
- Nature's Notebook 2012: State of the data, 2013, USA-NPN Technical Series 2013-001
- Nature's Notebook 2011: Data & participant summary, 2012, USA-NPN Technical Series 2012‐001
- Nature's Notebook 2010: Data & participant summary, 2011, USA-NPN Technical Series 2011-001
- 2009 Observer Survey Report, 2010, USA-NPN Technical Series 2010‐003
- 2009 Data Summary USA-NPN Technical Series, 2010, USA-NPN Technical Series 2010-002