000 00462nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _aNR:63:930.25
_bARC.17
245 0 _aPhosphate manuring experiments: A summary of nine experiments on immature and mature rubber in which the effects of christmas island rock phosphate and super phosphate on tree growth and yield are compared
260 _aMalaysia
_bRRIM
_c1962
490 _a RRIM Archives No. 17
942 _cBK
999 _c22741
_d22741