TY  - SER
AU  - Radhakrishnan S. and Bhuyan, B.R.
TI  - Observations on the incidence of weeds and seasonal fluctuations in abundance of Lemna Minor Linn, Azolla Pinnata R Br and Salvinia Cucullata Roxb in Ponds in Sibsagar, Assam
PY  - 1973///
ER  -