such as "Introduction", "Conclusion"..etc
1. MOORE, E. W. Graphic determination of carbon dioxide and the three forms of alkalinity. Amer. Water Works Assoc. Jour. 31: 51-66. 1939.
2. OSTERHOUT, W. J. V. and HAAs, A. R. C. On the dynamics of photosynthesis. Jour. Gen. Physiol. 1: 1-16. 1918.
3. RIEY, G. A. Limnological studies in Connecticut. Part III. The plankton of Linsley Pond. Ecol. Monogr. 10: 281-306. 1940.
4. WELCH, P. S. Limnological Methods. The Blakiston Company. Philadelphia, Pa. 1948.
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