Etiqueta de registo: 00575cam 2200205 450
001 1718106
003 http://id.bnportugal.gov.pt/bib/porbase/1718106
005 20030626073000.0
035 ## $929215
095 ## $aPTBN00943514
100 ## $a19960109d1995 k y0pory0103 ba
101 0# $aeng
102 ## $aGB
200 1# $aOn extremal contractions from threefolds to surfaces
210 ## $aCoventry$cUniv.Warwick,$d1995
215 ## $a20 p
225 2# $aWarwick preprints$v84/1995
675 ## $a51$vmed$zeng$3288051
700 #1 $aProkhorov,$bYuri G.$31389646
801 #0 $aPT$bBN$gRPC
977 ## $1XXIII. 01-02$2coop$4UCMA$6efalt221472$7bc$8coop$9UCMA$b22699$k0
998 ## $aCMA18-735