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- [4] THERMOGRAPHY OF UREA AND ITS PYROLYSIS PRODUCTS ZHURNAL ORGANICHESKOI KHIMII, 1971, 7 (05): : 972 - &
- [6] UREA AS A NITROGEN FERTILIZER FOR GREAT PLAINS GRASSLANDS JOURNAL OF RANGE MANAGEMENT, 1974, 27 (02): : 161 - 164