by Kenea Yadeta, Mulat Demeke, Amare G/Egizabher
Year of Publication 1999

by Wydler, H, Picard, R., Forschungsanstalt Agroscope Reckenholz-Taenikon ART, Ettenhausen (Switzerland)
Published in Agrarforschung (Switzerland) (01.01.2010)

by Merkurjevs, J., Riga Technical Univ. (Latvia). Faculty of Computer Science and Information Technology. Dept. of Modelling and Simulation, Bardačenko, V., Riga Technical Univ. (Latvia). Faculty of Computer Science and Information Technology. Dept. of Modelling and Simulation, Ruža, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology, Solomennikovs, A., Daugavpils University (Latvia). Inst. of Ecology
Published in Raksti (2009)

by Pretty J.N
Year of Publication 1995

Year of Publication 1995

by Ilbery, B, Chiotti, Q, Rickard, T. (eds.) (Department of Geography, University of Coventry, Priory Street, Coventry CV1 5FB (United Kingdom))
Year of Publication 1997

by Feledyn-Szewczyk, B, Duer, I.,Instytut Uprawy Nawozenia i Gleboznawstwa, Pulawy (Poland). Zaklad Systemow i Ekonomiki Produkcji Roslinnej
Published in Fragmenta Agronomica (Poland) (2006)

by Bray, F. (Centre National de la Recherche Scientifique, Paris (France))
Year of Publication 1989

by Stewart, V, Marsh, S, Kingwell, R, Pannell, D, Abadi, A, Schilizzi, S
Published in The journal of agricultural education and extension (01.11.2000)

by Horwith, B
Published in Bioscience (01.05.1985)

by Manalo, J.A. IV, Philippine Rice Research Inst. Maligaya, Science City of Muñoz, Nueva Ecija (Philippines). Development Communication Div, van de Flier, E., University of Queensland, Brisbane, Queensland, Brisbane (Australia). Center for Communication and Social Change
Published in Philippine Journal of Crop Science (Philippines) (01.04.2012)

by Curry, J. (Pan Livestock Service, Reading, UK.)
Published in Human ecology : an interdisciplinary journal (01.06.1996)

by Cuevas, S.M.M
Published in Philippine Journal of Crop Science (Philippines) (01.03.2013)

by McCloskey, D.N. (University of Iowa, Iowa City, IA)
Published in The Journal of economic history (01.06.1991)

by Kus, J, Nawrocki, S, Filipiak, K. (Institute of Soil Science and Plant Cultivation, Pulawy (Poland))
Published in Fragmenta Agronomica (Poland) (2002)

by Kumhala, F. (Ceska Zemedelska Univ., Prague-Suchdol (Czech Republic). Technicka Fakulta), Celjak, I, Vavra, V
Published in Research in Agricultural Engineering (Praha) (01.06.2001)

by Qi Yanbing, Chang Qingrui, Liu Mengyun
Published in Xi bei nong lin ke ji da xue xue bao.Zi ran ke xue ban (01.09.2006)

by Clark, Gregory
Published in Explorations in economic history (01.07.1988)

by Vilcek, J. (Soil Fertility Research Inst., Bratislava (Slovak Republic))
Published in Pol̕nohospodárstvo (1998)

by Kagan, A.M. (Belarus State Agricultural Academy, Gorki (Belarus))
Published in Vestsi akadehmii agrarnykh navuk Rehspubliki Belarus (2002)