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For symbols, take a look at ANSI/IEEE Std 91-1984, IEEE Standard Symbols, I am sure you can find a copy by doing a Google search. You can also look at the Texas Instruments TTL Data Book for Design Engineers (https://focus.ti.com/lit/ml/sdyz001a/sdyz001a.pdf) that has the information that this specification was derived from.
Please note that the Land Pattern calculator above is very dated (5 years old)
You can get a much improved calculator at https://www.PcbLibraries.com.
The tool is updated constantly so I would use the website rather than an attachment to ensure you get the latest version.
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