author = { Chianu, Jonas Nwankwo AND Tsujii, Hiroshi },

title = { Integrated Nutrient Management in the Farming Systems of the Savannas of Northern Nigeria: What Future? },

publisher = {SAGE Publications},

isbn = {0030-7270},

isbn = {2043-6866},

keywords = { Agronomy and Crop Science , Animal Science and Zoology , Ecology },

year = {2005},

url = { http://slubdd.de/katalog?TN_libero_mab2 }