info:oai:icrisat:2848info:ofi/fmt:xml:xsd:bookValbuenaDValbuena, DGerardBGerard, BDuncanADuncan, ATeufelNTeufel, NHomannSHomann, SBhatiaMBhatia, M2011Trade-offs of crop residue use in smallholder mixed farming systems in Sub-Saharan Africa and South Asiaproceeding