@book{34128,
	author = {Weaver, John E. (John Ernest), 1884-1966 and Clements, Frederic E. 1874-1945},
	title = {Plant ecology /},
	publisher = {Tata McGraw-Hill,},
	year = {1973.},
	address = {New Delhi :},
	edition = {2nd ed.}
}