cam a22 u 4500 128677481 CHVBK 20201001070503.0 880212s1971 xxu | 10 |eng|d (OCoLC)637209501 (NEBIS)000259698 ETH-BIB ger ETH-BIB ETHICS-ISBD Agronomy in a changing world, and: Research needs for the seventies (two related symposia held at the Meetings of the American Society of agronomy, the Corp science Society of America, and the Soil science Society of America; Tucson - Ariz., August 1970) ed.: C.A.Black a.o.; coord.ed.: M.Stelly; managing ed.: H.Hamilton, T.McCaffry AGRONOMY in a CHANGING WORLD RESEARCH NEEDS for the SEVENTIES Madison - Wisc. 1971 65 p. ASA special publication no.19 19 (NEBIS)000023784 295545011 AGRARÖKONOMIE ger (ETHUDK)000010779 ethudk LANDWIRTSCHAFTLICHE ENTWICKLUNG + LANDWIRTSCHAFTLICHER STRUKTURWANDEL ger (ETHUDK)000030803 ethudk LANDWIRTSCHAFTLICHE FORSCHUNG ger (ETHUDK)000030665 ethudk "1970/1980" ethudk Konferenzschrift Tucson (AZ) 1970/08 gnd-content u AGRARÖKONOMIE ger 330,09.061 nebis E1 u LANDWIRTSCHAFTLICHE ENTWICKLUNG + LANDWIRTSCHAFTLICHER STRUKTURWANDEL ger 631.1"714" nebis E1 u LANDWIRTSCHAFTLICHE FORSCHUNG ger 631%001.891 nebis E1 u "1970/1980" nebis E1 u AGRICULTURAL ECONOMICS eng 330,09.061 nebis E1 u ÉCONOMIE AGRICOLE fre 330,09.061 nebis E1 u AGRICULTURAL DEVELOPMENT + AGRICULTURAL STRUCTURAL CHANGE eng 631.1"714" nebis E1 u ÉVOLUTION DE L'AGRICULTURE + DÉVELOPPEMENT DE L'AGRICULTURE + CHANGEMENTS STRUCTURELS DE L'AGRICULTURE fre 631.1"714" nebis E1 u AGRICULTURAL RESEARCH eng 631%001.891 nebis E1 u RECHERCHES AGRONOMIQUES fre 631%001.891 nebis E1 Black C.A. Soil Science Society of America Annual Meeting (DE-588)1091883505 BK020800 XK020000 XK020000 Tucson (AZ) Kongress = Congrès 1970/08 NEBIS E16 E16 RH P T 4153: 19 NEBIS 490 -- ASA special publication no.19 19 (NEBIS)000023784 295545011 NEBIS 700 1- Black C.A. NEBIS 711 2- Soil Science Society of America Annual Meeting (DE-588)1091883505