TY  - BOOK
AU  - priest، winstons
TI  - how things work
T2  - a child's first library of learning
SN  - 070541034x
U1  - 031 21
PY  - 1989///
CY  - amesterdam
PB  - time life books
KW  - دوائر المعارف والمعلومات
ER  -