000 00309nam a2200109Ia 4500
008 220216s9999 xx 000 0 und d
100 _aNugawela A
245 0 _aMaximising yields in rubber plantations
260 _bBulletin of the Rubber Research Institute of Sri Lanka
_c1998
300 _a62-65
942 _cJS
999 _c62650
_d62650