Economic development that meets the needs of the present without compromising the ability of future generations to meet their own needs is :

Which nation is the highest defaulter in payment of its dues to the UN as on 1 -4 - 1999

Moving average method of fitting trend in a time series data removes the effect of

The number of possible samples of size n out of N population units without replacement is

Local control in experimental designs is meant to

Replication in an experiment means