Trace elements in soils and agriculture /
Sillanpaa, Mikko.
Trace elements in soils and agriculture / by Mikko Sillanpaa. - Rome : Food and Agriculture Organization of the United Nations, 1972 - iii, 67 p. : - FAO soils bulletin ; 17 .
issued with the support of the Swidish International Development Authority (SIDA).
9251004854 (pbk.)
Soils
631.416 / Tr
Trace elements in soils and agriculture / by Mikko Sillanpaa. - Rome : Food and Agriculture Organization of the United Nations, 1972 - iii, 67 p. : - FAO soils bulletin ; 17 .
issued with the support of the Swidish International Development Authority (SIDA).
9251004854 (pbk.)
Soils
631.416 / Tr