Sisällysluettelo:
“…Intro -- Contents -- Foreword / Joaquin Ruiz -- Introduction / John M. Guilbert -- Book I, 1935-1961. Early life, education, and work, with no freedom to plan exploration and no discoveries. -- Chapter One. …”
Sisällysluettelo:
“…Introduction: rare earth and critical elements in ore deposits / Philip L. Verplanck and Murray W. Hitzman -- Rare earth element ore geology of carbonatites / Philip L. …”