References
- Apha, 1975: Standard Methods for the examination of water and wastewater. — Amer. Public Health Assoc., Washington, 1194 pp.
- Bonetto, C. A., Bonetto, A. A. & Zalocar, Y., 1981: Contribution to the limnological knowledge of the Paraguay River in its lower section. — Ecosur 8 (16): 55–88 (Spanish).
- Neiff, J. J., 1981a: Incidence of aquatic macrophytes over limnologic parameters in the Chaco waterbodies. — Proc. X Nat. Water Meet (in press) (Spanish).
- Neiff, J. J. 1981b: Ecological features of the waterbodies of the Northeast of Argentina. — Symp. VI Jorn. Arg. Zool.: 115–151 (Spanish).
- Neiff, J. J. 1982: Successional features of the vegetation in floating islands of the Argentine Chaco. — Bol. Soc. Arg. Bot. 21 (1–4): 325–341 (Spanish). — ms: Pleuston productivity of Eichhomia crassipes in the Chaco waterbodies close to the Paraná River. — Ecosur (in press) (Spanish).
- Papadakis, J., 1974: Ecology. Agricultural possibilities of Argentine Provinces. — In: Argentine Encyclopaedia of farming and cattle raising: 2 (3): 1–78 Acme Buenos Aires (Spanish).
- Vollenweider, R., 1974: A manual of methods for measuring primary production in aquatic environments. — IBP Handbook 12: 1–225. Blackwell Oxford.