@book{327802,
	author = {Briggs, David J. and 1                                                                                                                                                                                                                                                              .  and Courtney, Frank M.},
	title = {Agriculture and environment : The physical geography of temperate agricultural systems / },
	publisher = {Longman , },
	year = {1985.},
	address = {London : },
	edition = {1 / }
}