Ben Prof 1 59 DNA IB (BX NO. 23)
BEN PROF 1/ 54/1. DNA IB (BX NO.21)
BEN PROF 1/49 VOL. II DNAIB (BXNO.17)
BEN PROF 1/ 50 VOL. XIV DNA IB (BX NO.20)
BEN PROF 1/ 50 VOL. XV DNA IB (BX NO. 20)
BEN PROF 1/45 VOL.XII DNA IB (BX NO. 13)
Ben Prof 1 66/VOL I DNA IB (BX NO 25)
BEN PROF 1/50 VOL. V DNAIB (BX NO.18)
BEN PROF 1/50 VOL. VI DNAIB (BX NO.18)
BEN PROF 1/50 VOL. VIII DNAIB (BX NO.18)