Hallam, A.  <br/><br/>
Primary origin of the limestone - Shale rhythm in the British lower lias 

 - 175-176pp. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Origin - Limestone shale - British lower lias<br/>Blue lias beds - Dorset - England<br/>Historical geology - England<br/>Lower jurassic limestone shale - England