TY  - BOOK
AU  - Nickelsburg,Janet
TI  - Field trips: ecology for youth leaders 
SN  - 0808714058
U1  - 577 23
PY  - 1966/// [Printing 1971]
CY  - Minneapolis
PB  - Burgess Pub. Co.
KW  - Ecology
N1  - Includes Bibliography and Indexes
ER  -