Soils fertility survey: Republic of Kore - results of fertilizer trials
Food and Agriculture Organization of the United Nations
Soils fertility survey: Republic of Kore - results of fertilizer trials - Rome FAO 1972 - 159 p. - No. 1; FAO, Technical Report .
Soils fertility survey: Republic of Kore - results of fertilizer trials - Rome FAO 1972 - 159 p. - No. 1; FAO, Technical Report .