1. 1/1/1963 201 Spanish verbs fully conjugated in all the tenses, alphabetically arranged. This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly...
  2. 19/1/1955 An introductory course that contains twenty-six basic lessions and five review lessons. In framework and content, Speaking Spanishprovides a sound foundation for further language experinece. The structure of the language is introduced unobtrusively without any mention of grammar. Only a bare...
  3. One of the outstanding problems of the biologist, whether he be beginning student or specialists, is that of understanding technical terms. The best way to understand and remember technical terms is to understand first their component parts, or roots. This dictionary has been designed primarily...