1,881 Nurul Jannah Abdullah 2019-03-26 https://www.leg.state.mn.us/docs/2009/other/091102.pdf Pratt, D. C., Bonnewell, V., Andrews, N. J., & Kim, J. H. (1980). The Potential of Cattails as an energy source. Retrieved from http://www.leg.state.mn.us/lrl/lrl.asp Revised record 07.10.2019.