00359nam a2200145Ia 4500008004100000082001600041100001400057245003300071250000600104260003600110300000800146650002300154650001800177653001800195170901s1972    xx            000 0 und d  a581.5bV50T  aVerma, V. 2aA text Book of Plant Ecology  a1  aDelhibEmkay Publicationsc1972  a200  aBotanical sciences  aPure Sciences  aPlant Ecology