Unit Definition (picogram) The picogram is a metric unit of mass equal to 10E-12 gram or one millionth of a microgram.
Unit Definition (pud, pood [Russia]) The pud or pood is a traditional unit of weight in Russia. The pud equals 40 funte or 1/30 packen; this is about 16.381 kilograms or 36.11 pounds. The plural is pudi.
Weight/Mass 
