Maqbool & Shahina 1987. Nematodes of northern areas in Pakistan. Description of Nagelus saifulmulukensis n. sp. and Merlinius montanus n. sp. (Nematoda; Merliniinae) with notes on three species of Tylenchorhynchus Cobb, 1913. Revue de Nematologie, 10(3) 1987: 289-294