Thorpe, R. S. <br/><br/>
Origins of igneous rocks and metal ores ( motion picture) 
Open University ; narrators: R. S. Thorpe, S. Moor Bath, J. B. Wright. 
 - Milton Keynes :   Open University,   1972. 
 - 1 film reel (25 min.) : sd., b&w.   ; 16 mm. 
<br/><br/> Dr. R. S. Thorpe explains that the aim of the first part of the programme is to approach the strontium isotope method for determining the origin of igneous rocks in a different way to thar adopted in the unit.  Back up in U-matic  Bahan rosak (Lupus). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocks, Igneous.