Estuarine nitrite maxima and nitrifying bacteria (Ems-Dollard estuary) by Helder, W., De Vries, R.T.P.

Get full text

An automatic phenol-hypochlorite method for the determination of ammonia in sea- and brackish waters by Helder, W., De Vries, R.T.P.

Get full text

Nutrient distribution in the Zaire estuary and river plume by Van Bennekom, A.J., Berger, G.W., Helder, W., De Vries, R.T.P.

Get full text

Sediment water exchanges of nutrients and oxygen on tidal flats in the EMS-Dollard estuary by Rutgers van der Loeff, M.M., van Es, F.B., Helder, W., de Vries, R.T.P.

Get full text

Dynamics of dissolved silicium and nitrogen-nutrients at low temperature in the Ems-dollard estuary by Helder, W., De Vries, R.T.P.

Get full text

An experiment on the relative importance of denitrification, nitrate reduction and ammonification in coastal marine sediment by Goeyens, L., De Vries, R.T.P., Bakker, J.F., Helder, W.

Get full text