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Valentin N'DOUBA & Alain LAMBERT
413-418, Published on 28 September 1999, art. 21 (20)Dwi Listyo RAHAYU & Jacques FOREST
461-472, Published on 28 September 1999, art. 21 (24)Darren C. J. YEO & Phaibul NAIYANETR
483-494, Published on 28 September 1999, art. 21 (26)Claude MONNIOT & Helmut ZIBROWIUS
547-555, Published on 28 September 1999, art. 21 (30)Jean-François VOISIN et al.
573-580, Published on 28 September 1999, art. 21 (32)