@book{84200,
	author = {GUPTA, Tirath   and   DEEPTNDER MOHAN},
	title = {Economics of trees versus annual crops on marginal agricultural lands                                                   },
	publisher = {Oxford & IBH                                                },
	year = {1982},
	series = {Centre for Management in Agriculture, Ahmedabad, Monograph.81},
	address = {New Delhi                                                   }
}