Estimating piping manhours

does anyone have information or downloading links for the following books ?

- Technical calculation and estimator's man hours manual by Marko Bulic
- Piping Manhour Manual for Industrial Construction by Norm Goodings
- Pipefitter estimator by Norm Goodings

I have been looking in all the web but without results.

Thanks in advance

In the meantime I leave you the following links with other useful books :

[url]http://depositfiles.com/files/0iijbrr0a[/url]
[url]http://www.4shared.com/office/eY0tTzBz/Estimators_Piping_Man-Hour_Man.html[/url]
[url]http://www.4shared.com/rar/GZmt0ihm/ESTIMATORS_ELECTRICAL_MAN-HOUR.html[/url]

thanks

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