000 00271nam a2200109 i 4500
008 010101s1986 sp g spa
100 _aMARGALEF.
245 0 _aECOLOGIA.
_c/ MARGALEF.
260 _b:PLANETA.
_c,1986
650 _aECOLOXIA
997 _dFalta ISBN
_e1