Ben Prof 1 64 /IIIa. DNA IB (BX NO 24)
BEN PROF 1/50 VOL. III DNAIB (BX NO.17)
Ben Prof 1 64/ VOL IV DNA IB(BX NO 24)
Ben Prof 1 65/VOL II DNA IB(BX NO 25)
Ben Prof 1 71/VOL II DNA IB (BX NO 25)
BEN PROF 1/50 VOL. VI DNAIB (BX NO.18)
BEN PROF 1/45 VOL.XIV DNA IB (BX NO. 13)
Ben Prof 1 80 DNA IB (BX NO. 29)
BEN PROF 1/ 75/I. DNA IB (BX NO. 27)
Ben Prof 1 85/VOL I DNA IB (BX NO. 29)