TY  - BOOK
AU  - JOHANNSEN, ALBERT
TI  - A DESCRIPTIVE PETROGRAPHY OF THE IGNEOUS ROCKS: THE FELDSPATHOID ROCKS (PART I) THE PERIDOTITES AND PERKNITES (PART II) VOLUME IV
U1  - 552.1 
CY  - CHICAGO
KW  - ROCAS IGNEAS
ER  -