Pritchand Seth G & Amthor Jeffrey S Crops and Environmental Change An introduction to effects of global warming, increasing atmospheric CO2 and O3 concentration and soil salinization on crop physiology and yield .-81-8189*108-2 - International Book Distribution Co, India, Lucknow 2006 ISBN: 108-2 Dewey Class. No.: J38:(U287) P06/B28281