TY  - BOOK
AU  - Wilson, Harold A.
TI  - Experimental Physics: a text-book of mechanics, heat, sound and light
U1  - Pg40 
PY  - 1915///
CY  - Cambridge
PB  - Cambridge University Press
N1  - Pg mean Physics General & Mechanics Page 457-464 in A to Z Accession Register (Acc. No. Pg1-Pg228) & Page 640 (Acc. No. 224-231)
ER  -