TY  - BOOK
AU  - Mellanby Jean
AU  - Croxford Vera
TI  - Nature detection and conservation
SN  - 0552540196 
AV  - QH48 
U1  - 500.9 
PY  - 1972///
CY  - London
PB  - Transworld
KW  - Natural history
KW  - Juvenile literature
N1  - Bibliography: p. 140-143
ER  -