History, society and local production system crucial variables in modern soil conservation work
Christiansson, Carl
History, society and local production system crucial variables in modern soil conservation work Carl Christiansson - Stockholm Stockholm University 1992 - 11p. ill 30cm. - Paper; 19 .
Soil conservation
IRA S623.C58
History, society and local production system crucial variables in modern soil conservation work Carl Christiansson - Stockholm Stockholm University 1992 - 11p. ill 30cm. - Paper; 19 .
Soil conservation
IRA S623.C58