Who authored the book “Elements of Economic Entomology”?

✅ Explanation: "Elements of Economic Entomology" was written by B. Vasantharaj David & T. Kumaraswami who worked in India and made significant contributions to the study of agricultural pests and their management.

📌Other Options Explanations:
Ramakrishna Ayyar: An Indian entomologist who authored "Some South Indian Insects."
K.K. Nayar & Ananthakrishna: Indian entomologists known for their work on insect physiology and endocrinology.