00406nam a22001217a 450000500170000000800410001702000150005804000080007305000230008124501330010426000310023730000160026820230621113234.0210401b           ||||| |||| 00| 0 eng d  a0582004136  cDLC  aS589.7b.B74  1993  aAgriculture and Environment :bThe physical geography of temperate agricultural systems /cBriggs , David J, Frank M. Courtney .  aHarlow :bLongman ,c1993.  axiv,442 p,: