00455nam a2200157Ia 4500008004100000020001500041082001600056100002700072245005900099260004600158300000800204650002300212650001800235653002600253653001800279170901s2006    xx            000 0 und d  a817233415X  a581.5bS48P  aSingh, Prithipal Singh 0aPerspective in Plant Ecology and Environmental Biology  aJodhpurbScientific Publishers Indic2006  a375  aBotanical sciences  aPure Sciences  aEnvironmental biology  aPlant ecology