Ben Prof 1/202/320 DNA IB (BX no. 75)
Ben Prof 1 176/VOL VI IDN IB (BX NO. 59)
Ben prof 1/149/1 DNA IB (BX NO 50)
Ben Prof 1 195/6 IDN IB (BX NO 65)
BEN PROF 1/ 132B DNA IB (BX. NO. 44)
Ben Prof 1 178/VOL 1 IDN IB (BX NO. 59)
BEN PROF 1/137 VOL.I DNA IB (BX NO. 45)
Ben Prof 1 178/VOL II IDN IB (BX NO. 59)
BEN PROF 1/132 VOL.II DNA IB (BX NO.44)
Ben Prof 1 175/1 IDN IB (BX NO. 58)