Journal of Hydrology New Zealand. Vol. 20 No. 2 (1981). 

 - Napier : New Zealand Hydrological Society.  [date of publication not identified] 
 - p. 
<br/><br/> It contains of Papers, Future Meetings, Notes, News, Corrigenda and Book Reviews for 1981 in Vol. 20 No. 2. 
<br/><br/>Surface suspended and bedload sediment, Clutha river system / I. G. Jowett and D. M. Hicks. Local variations of cross-sectional form in a small gravel-bed stream / A. D. Knighton. An Integrated sysem for automatic collection of flow and suspended sediment data / D. M. Hicks and P. Bright.