An indispensable map to the literature of geology - precise, exhaustive, unapologetically historic. A cornerstone for geology scholars. The International Catalogue Of Scientific Literature Twelfth Annual Issue (H Geology) brings together the year's indexed periodical output in earth sciences with the rigour of an annual scientific index. This scientific literature catalogue and geology reference book organises references and subject headings to make it straightforward to locate papers, reports and notes across the contemporary literature; it functions as a scientific periodicals directory and an earth sciences bibliography that supports verification, citation and wider reading. As a geological research compilation it helps trace the arc of debate in fields from stratigraphy and palaeontology to mineralogy and geomorphology without the noise of later reinterpretation. By gathering references from journals across borders it reveals the international networks of correspondence and citation that carried ideas around the world. Librarians and academics will value it as an academic researchers resource and as a building block for a university geology collection, while students and curious readers gain a rare window into early 20th century science. Practical in use yet resonant in context, it acts as both a working reference and a readable geology scholars guide, putting primary pathways of discovery within reach. Curators, historians of science and institutionally minded readers will appreciate its usefulness when reconstructing provenance and tracing scholarly influence. Historically significant and quietly evocative, this twelfth annual issue sits at the crossroads of disciplinary formation and the periodical culture that transmitted scientific ideas. Casual readers with an interest in historical geology works will find material for exploration; classic-literature collectors and institutions that prioritise science library essentials will recognise its archival importance. Out of print for decades and now republished by Alpha Editions. Restored for today's and future generations. More than a reprint - a collector's item and a cultural treasure.