000 00392nam a2200121Ia 4500
001 84520
008 170722s9999 xx 000 0 und d
100 _aOpen University Course Team
245 _aIndividuals and communities Unit 10.Climatic factors Unit11.Edaphic Factors;Problems of dispersal Unit 11.Edaphic factor /
260 _bOpen Uty Press
_c1974
300 _a51
_c28 cm.
942 _cGEN
999 _c8920
_d8920