انتشارات Nist
![From sundials to atomic clocks: Understanding time and frequency](http://cdn.ketabkoo.com/covers/1/171047-n.jpg)
From sundials to atomic clocks: Understanding time and frequency
James Jespersen, Jane Fitz-Randolph, 1999![Review of Building Evacuation Models](http://cdn.ketabkoo.com/covers/3/321573-n.jpg)
Review of Building Evacuation Models
Kuligowski, Erica D.![Rockwell hardness measurement of metallic materials](http://cdn.ketabkoo.com/covers/3/344306-n.jpg)
Rockwell hardness measurement of metallic materials
Samuel R Low; National Institute of Standards, 2000![Rockwell Hardness Measurement of Metallic Mtls](http://cdn.ketabkoo.com/covers/3/344307-n.jpg)
Rockwell Hardness Measurement of Metallic Mtls
S. Low, 2001![Surface Engineering Measurement Standards for Inorganic Materials](http://cdn.ketabkoo.com/covers/3/344310-n.jpg)
Surface Engineering Measurement Standards for Inorganic Materials
Stanley J. Dapkunas![Computer Security Divsion Annual Report 2015](http://cdn.ketabkoo.com/covers/12/1291700-n.jpg)