page 70: 'quanity'->'quantity'
page 35: 'corrrected'->'corrected'
page 24: 'Mesopatamia'->'Mesopotamia'
page 20: 'contradition'->'contradiction'
page 70: 'quanity'->'quantity'
page 35: 'corrrected'->'corrected'
page 24: 'Mesopatamia'->'Mesopotamia'
page 20: 'contradition'->'contradiction'