Muhammad Nisar Khan, Gulnaz Hameed, Arshad Mahmood Malik and Saima Asad 2023. Economics of Inter-Cropping: A Case Study of Onion and Tomato at District Muzaffargarh, Punjab, Pakistan. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences. 60, 3 (Sep. 2023), 413–430. DOI:https://doi.org/10.53560/PPASB(60-3)833.