1974
1974
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150
150
thinkdm2
thinkdm2
https://secure.gravatar.com/avatar/ce914e6272d6969e1f35f804e5035d495b5d45259f8c638f867bbb7df0101d59?s=96&d=mm&r=g
- Tragon Corporation was founded by Dr. Herbert Stone and Joel L. Sidel.
- Quantitative Descriptive Analysis (QDA) was launched by Tragon.
