Ben prof 1/43 vol V. DNA IB (BX NO 8)
Ben prof 1/42 vol V I. DNA IB (BX NO 7)
BEN PROF 1/ 44. VOL.1 DNA IB(BX NO.10)
Ben Prof 1 40/ VOL I DNA IB (BX NO.4)
Ben prof 1/42 vol V I. DNA IB (BX NO 7)
Ben prof 1/42 vol IX DNA IB (BX NO 7)
BEN PROF 1/ 44. VOL.V DNA IB (BX NO. 10)
Ben prof 1/42 vol.xii.DNA IB (BOX NO 7)
Ben Prof1 40/VOL VIII DNA IB (BX NO 4)
Ben Prof 1 22/VOL I DNA IB (BX NO 2)