Shukla , Rs . A text Book of Plant Ecology / Textual Documents Rs Shukla and PS Chandel. - Reprint / - New Delhi : S Chand & Co Ltd , 2008. - 544pg ; 22cm. ISBN: 81-219-0548-6 Subjects--Index Terms: Plant Ecology G-Botany Dewey Class. No.: 581.5 / Sh 74 Pl