Chapter 17 of 30 · 120 words · ~1 min read

Part 3

, pp. 91-92.

PLANK, H. K.

1947. Plant toxicological studies. Federal Exp. Stat. Rep., Mayagüez, Puerto Rico, 1946, pp. 11-13.

1950. Insecticidal properties of some plants growing in Puerto Rico. Federal Exp. Stat., Mayagüez, Puerto Rico, Bull. No. 49, 17 pp.

PLANK, H. K., and WINTERS, H. F.

1949. Insect and other animal pests of _Cinchona_ and their control in Puerto Rico. Fed. Exp. Stat. Puerto Rico, Mayagüez, Bull. No. 46, 16 pp.

POCOCK, R. I.

1893. Notes upon the habits of some living scorpions. Nature, London, vol. 48, pp. 104-107.

POPE, PAULINE.

1953. Studies of the life histories of some Queensland Blattidae (Orthoptera). Part 1 . The domestic species. Proc. Roy. Soc. Queensland, vol. 63, pp. 23-46.

1953a. Idem.