The 2nd Nordic Meeting of Researches and Advisors on Biological Farming : collected papers of the seminar held in Mikkeli, Finland, November 9-12, 1988
The 2nd Nordic Meeting of Researches and Advisors on Biological Farming : collected papers of the seminar held in Mikkeli, Finland, November 9-12, 1988
The 2nd Nordic Meeting of Researches and Advisors on Biological Farming : collected papers of the seminar held in Mikkeli, Finland, November 9-12, 1988
The 2nd Nordic Meeting of Researches and Advisors on Biological Farming : collected papers of the seminar held in Mikkeli, Finland, November 9-12, 1988