List of Books
| Book Title | Subject | Author | Publishing Year | Language | Book Pages |
| south africa | reference books | tom hopkinson | 1969 | 159 | |
| switzerland | reference books | herbert kubly | 1966 | 159 | |
| turkey | reference books | desmind stewart | 1966 | 159 | |
| united states | reference books | donovan p | 1968 | 191 | |
| animal behaviour | reference books | tinbergen n | 1969 | 199 | |
| desert | reference books | leopold starker | 1969 | 191 | |
| earth | reference books | arthur beiser | 1964 | 192 | |
| ecology | reference books | peter farb | 1968 | 192 | |
| fishes | reference books | qmmauney f d | 1969 | 192 | |
| mammals | reference books | richard carrington | 1963 | 192 | |
| plants | reference books | went w frist | 1968 | 194 | |
| mountains | reference books | milne l j | 1968 | 192 | |
| body | reference books | nourse a e | 1968 | 200 | |
| energy | reference books | wilson mitchell | 1970 | 200 | |
| food and nutrition | reference books | sebrell w h | 1968 | 200 |