TY  - RPRT
TI  - Focused campaign increases activity among participants in Nature's Notebook , a citizen science project
AU  - Theresa Crimmins
AU  - Jake F. Weltzin
AU  - Alyssa H. Rosemartin
AU  - Echo M. Surina
AU  - Lee Marsh
AU  - Ellen G. Denny
PY  - 2014
DO  - 10.4195/nse2013.06.0019
UR  - https://pubs.usgs.gov/publication/70110814
ID  - 70110814
ER  -