GPS
| Firth Author | Year | Full citation | Keywords |
|---|---|---|---|
| Watanabe | 2002 | Watanabe O, S. Kurokawa, H. Sasaki, T. Nishida, T. Onoue, and Y. Yoshimura, 2002. Geographic scale distribution and occurrence pattern of invasive weeds. Journal of Japanese Society of Grassland Science Vol.48, No.5(20021215):440-450 | database, distribution map, geographic scale, GPS, invasive weed |