TY  - BOOK
AU  - O´NEILL, AMANDA
TI  - SNAKES SHED THEIR SKINS: AND OTHER QUESTIONS ABOUT REPTILES 
T2  - I WONDER WHY 
SN  - 0-590-03911-3
U1  - I / 500 
PY  - 1996/// .
CY  - ESTADOS UNIDOS ; 
PB  - SCHOLASTIC , 
KW  - CIENCIAS NATURALES Y MATEMÁTICAS
ER  -