TY  - BOOK
AU  - Resler,Tamara J.
TI  - How things work: iscover secrets and science behind medieval machines, jet packs, movie magic, and everything in between 
T2  - How things work
SN  - 9781426331664 (hardcover)
AV  - T15 .R435T
PY  - 2018///
CY  - Washington, D.C.
PB  - National Geographic
KW  - Machinery
KW  - History
KW  - Inventions
KW  - Technology
N1  - Cover title; Includes bibliographical references (pages 200-201) index
ER  -