6 1 50 Dasar - Dasar Kimia Tanah Kim H.Tan Primary Author mixed material 9794202061 Yogyakarata Gadjah Madad University Press 1991 Humic Matter In Soil And The Environment Kim H.Tan Primary Author mixed material 0824742729 New York Marcel Dekker,Inc 2003 Soil Sampling, Preparation, And Analysis Kim H.Tan Primary Author mixed material 0849334993 Boca Rotan CRC Press 2005 Environmental Soil Science Kim H.Tan Primary Author mixed material 0824791983 Basel Marcel Dekker,Inc 1994 Humic Matter In Soil and The Environmental Kim H.Tan Additional Author mixed material 0824742729 Marcel Dekker,Inc 2003 Soil Sampling, Preparation and Analysis Kim H.Tan Additional Author mixed material 0849334993 Taylor & Francis 2005