TY - BOOK AU - Frimmel, F.H., ed. ED - Dahlem Workshop on Humic Substances and their Role in the Environment : TI - Humic substances their role environment: report T2 - Life sciences research reports SN - 0471918172 U1 - 631.417 21st ed. PY - 1988/// CY - Chichester PB - John Wiley and Sons KW - Christman KW - R.F., ed KW - Conferences KW - Humipication KW - Humus N1 - Index: p. 262-71 ER -