TY - BOOK AU - Shaner, W W . AU - Philipp,P F . AU - Schmehl,W R . TI - Farming system research and development / U1 - 631.5841 PY - 1982/// CY - : PB - Consortium for International Development , KW - Conceptual frame work KW - Development of a research base KW - Planning of farm research KW - Problem identification KW - Target and research area selection ER -