Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Section-cutting: a practical guide to the preparation and mounting of sections for the microscope, special prominence being given to the subject of animal sections
Section-cutting: a practical guide to the preparation and mounting of sections for the microscope, special prominence being given to the subject of animal sections