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Urea - Wikipedia
Urea | Definition, Formula, Production, Uses, & Facts | Britannica
What Is Urea Made Of? How Is Urea Produced? - Science ABC
Urea: what is it, symptoms and treatment | Top Doctors
Urea - American Chemical Society
BUN (Blood Urea Nitrogen) Test: Uses, Procedures, and Results
Urea Cycle – Location, Steps, and Diagram - Science Facts
Urea - CH4N2O Structure, Properties, and Uses - BYJU'S
Urea (CH₄N₂O) - Definition, Structure, Preparation, Properties, …
What is Urea? (with pictures) - AllTheScience