Literature Cited
- Bengtsson, K. Wallerstein Labs. Communs. 16(54): 231 (1953).
- Bengtsson, K., and Helm, E. Wallerstein. Labs. Communs. 9(28): 171 (1946).
- Blom, G. Wallerstein. Labs. Communs. 18(62): 173 (1955).
- Byer, A., and Abrams, D. Wallerstein Labs. Communs. 16(54): 253 (1953).
- Byer, A., and Gray, P. P. Wallerstein Labs. Communs. 16(55): 303 (1953).
- Gray, P. P. Wallerstein Labs. Communs. 17(59): 241 (1954).
- Helm, E., and Trolle, B. Wallerstein Labs. Communs. 9(28): 181 (1946).
- Metzner, C. A. Wallerstein Labs. Communs. 6(17): 5 (1953).