论文部分内容阅读
It may be safely presumed that few of us who have worked in the field as a geological surveyor would dissent in making an open confession of our unfortunate attitude towards igneous rocks particularly those of a massive form. These obstacles, as one is apt to regard them, are the unruly bodies
It may be safely presumed that few of us who have worked in the field as a geological surveyor would dissent in making an open confession of our unfortunate attitude towards igneous rockspecially those of a massive form. These obstacles, as one is apt to called them are the unruly bodies