| 000 | 00579nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 140224s9999 xx 000 0 und d | ||
| 082 | _a631.454:633.002:631.415.2(213) 1969.7.1/1970.6.30 (083.9) L | ||
| 100 | _aAgencey for International Development | ||
| 245 | _aSoil fertility requirments to attain efficient production of food crops on the extensive, deep, wel-drained but relatively infertile asid soils of the humid tropics; Annual summery prograss report 1968-1970 | ||
| 260 |
_aIthaca _bAID _c1970 |
||
| 300 | _a12p. | ||
| 650 | _aSoil Science,Soil fertility | ||
| 942 | _cBK | ||
| 999 |
_c95909 _d95909 |
||