Longitude and Latitude to search by zip

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i found formula calculates distance zip codes.
the 2nd long , lat formula? add distance (25 miles)
both long , lat 2nd set of variables? or use base long
and lat add , subtract 2 sets?

has done search using zip codes determine within
specific range (miles / kilometers)?

and when result of formula, how apply getting
range of zip codes? , how query using result.

thanks

--
wally kolcz
mynextpet.org
founder / developer
586.871.4126


i entered "zip code radius" google , finding many products
and services you. haven't found
version yet.


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