The NTCHS technical criteria for hydric soils were originally developed to produce a national list of hydric soils from an existing soils database, and the inclusion
For other uses, see SGD (disambiguation). The Singaporean dollar (Malay: Ringgit Singapura, sign: $; code: SGD) is the official currency of Singapore. It is normally abbreviated with the dollar sign $, or alternatively S$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.
PSID or Psid may stand for: 1  Pounds per square inch differential. 2  the Panel Study of Income Dynamics, a long term survey of a set of households in the United States. 3  PSID64, a player for SID music.