00537nam a22002057a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001300102100002000115245002900135260003100164300003100195490004100226650002300267830004100290CHAP20220329141738.0971013s1981    us a    r     00010 eng d  a73222  a74194  a83753  cCHAP04a550bB3700aBarnes, John W.1 aBasic geological mapping  aNew York :bHalsted,c1981  a106 p.b: ilus. ; gráfs.  aGeological Society of London Hanbook14aGeologíaxMapas.0 aGeological Society of London Hanbook