"भूवैज्ञानिक समय-मान": अवतरणों में अंतर

* [http://exploringtime.org/?page=segments Exploring Time] from Planck Time to the lifespan of the universe

* [http://www.episodes.org/backissues/272-yasuo/Time%20Scale.pdf] Gradstein, Felix M. et al. (2004) ''A new Geologic Time Scale, with special reference to Precambrian and Neogene'', Episodes, Vol. 27, no. 2 जून 2004 (pdf)

 

[[श्रेणी:भूविज्ञान]]