Planned Change in Farming Systems Progress in On Farm Research JOHN, Wiley & Sons text England JOHN, Wiley & Sons 1991 eng
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347p. : ilus ; 25,5 cm on farm research farming systems 631:303.02 631:303.02 JOH p 0-471-93417-8 221020 20221020022514 INLIS000000000006323 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)