Studies were conducted with eight tree species in natural grassland for 15 years (July 1988 to June 2003) under semi arid condition to select suitable tree species for introduction in natural grassland/sown pasture for higher production.
Epidemiological study on effect of air pollution on human health (adults) in Delhi
How green is green?
Doha: inaction in the face of urgency
Coal mines to get automatic nod for first expansion