Ben Prof. 1 202/39 DNA IB (BX NO. 71)
Ben Prof 1 202/421 DNA IB (BX NO 76)
BEN PROF 1/203/97 VOL. II DNA IB (BX. NO. 82)
Ben Prof 1 202/395 DNA IB (BX NO 76)
Ben Prof 1 BP203/453 BX 92
Ben Prof 1 202/393 DNA IN (BX NO 76)
Ben Prof. 1 202/60 DNA IB (BX NO. 71)
BEN PROF 1/203/100 VOL. II DNA IB (BX. NO. 82)
Ben Prof 1 204/VOL XI DNA IB(BX NO98)
Ben Prof 1 204/VOL XIV DNA IB(BX NO98)