Author:

Kalvacheva,R.K.

Year:

1990

Title:

Review of microfossil Datings (Early Paleozoic acritarchs and Devonian Crinoids Ossicls) of Low Grade metamorphic rocks in Stara Planina Mts and Vakarel Hill

Foreign title:

Obzor Datirovok po mikrofossilyam (Rannepaleozoi Skim Akritarkham i Devonskii Chlenikam Krinoidei) Slabometamorfizovannykh Porod v Stara-Planine i Vakarelskikh Vysotakh)

Reference:

Kalvacheva,R.K. (1990) Review of microfossil Datings (Early Paleozoic acritarchs and Devonian Crinoids Ossicls) of Low Grade metamorphic rocks in Stara Planina Mts and Vakarel Hill [ Obzor Datirovok po mikrofossilyam (Rannepaleozoi Skim Akritarkham i Devonskii Chlenikam Krinoidei) Slabometamorfizovannykh Porod v Stara-Planine i Vakarelskikh Vysotakh) ] Bulgarian Geological Society,Mikrofossilii v Bolgarskoi Stratigrafii Bolgarskoe Geologicheskoe Obshchestvo (Microfossils in Bulgarian Stratigraphy,T.G.Nikolov-Ed) P. 17- 22

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