共 2 条
- [1] TENTATIVE APPROACH TO THE MOLECULAR-STRUCTURE OF HUMIC ACIDS - SPECTRAL EVIDENCE FOR A DERIVATION OF HUMIC ACIDS FROM PLANT-BORNE ESTERS .2. INFRARED AND CHEMICAL-ANALYSES NETHERLANDS JOURNAL OF AGRICULTURAL SCIENCE, 1979, 27 (02): : 153 - 175
- [2] TENTATIVE APPROACH TO THE MOLECULAR-STRUCTURE OF HUMIC ACIDS - SPECTRAL EVIDENCE FOR A DERIVATION OF HUMIC ACIDS FROM PLANT-BORNE ESTERS .1. ELECTRON-PARAMAGNETIC RESONANCE (EPR) SPECTRA NETHERLANDS JOURNAL OF AGRICULTURAL SCIENCE, 1979, 27 (01): : 79 - 91