German standard methods for the examination of water, waste water and sludge; biological-ecological analysis of water (group M); determination of the saprobic index (M 2)— 18 стр.
German standard methods for the examination of water, waste water and sludge; biological-ecological analysis of water (group M); general information on planning and procedure in the biological examination of flowing waters (M 1)— 13 стр.
German standard methods for the examination of water, waste water and sludge; biological-ecological examination of waters (group M); procedure for the determination of the saprobic index on the basis of benthic communities (M 2); classification literature— 9 стр.
German standard methods for the examination of water, waste water and sludge - Biological-ecological analysis of water (group M) - Part 1: Determination of the saprobic index in running waters (M 1)— 80 стр.
Methods of soil investigations for agricultural engineering - Chemical laboratory tests - Part 10: Testing and evaluation of water for irrigation— 11 стр.
German standard methods for the examination of water, waste water and sludge - Biological-ecological analysis of water (group M) - Part 1: Determination of the saprobic index in running waters (M 1)— 80 стр.
German standard methods for the examination of water, waste water and sludge; biological-ecological examination of waters (group M); procedure for the determination of the saprobic index on the basis of benthic communities (M 2); classification literature— 9 стр.
