Ben Prof 1 186/1 IDN IB (BX NO 63)
Ben Prof 1 174/VOL I IDN IB (BX NO. 57)
Ben Prof 1 182/3 IDN IB (BX NO 62)
Ben prof 1/155 vol. II DNA IB (BX NO 54)
BEN PROF 1/125 DNA IB (BX. NO. 41)
Ben Prof 1 180/5 IDN IB (BX NO 61)
Ben Prof 1/202/358 DNA IB (BX no. 75)
Ben Prof 1/202/362 DNA IB (BX no. 75)
Ben Prof 1 172/VOL II IDN IB (BX NO 56)
Ben Prof 1/202/364 DNA IB (BX no. 75)