000 nam a22 7a 4500
999 _c28285
_d28285
008 170228b xxu||||| |||| 00| 0 eng d
020 _a0947613218
050 _aG 570 .F67 1990
100 _aFoster-Smith, Bob
245 _aOcean challenge/
_cBob Foster-Smith.
260 _aGodalming :
_bWWF United Kingdom, cop.
_c1990.
300 _a151 p. : il.; 21 x 24 cm.
650 _aMar -- Ensenyament primari -- Problemes, exercicis, etc.
942 _2lcc
_cBOOKS
_hG 570 .F67 1990