If you are looking for a PDF version of his grammar book, here is a comprehensive guide on the book's utility, its relevance to exams, and the legalities of finding it online.
Similar to English prepositions but placed after nouns. Conjunction (Yojak): Joining words and clauses. Interjection (Vismik): Expressing emotions. punjabi grammar by narinder singh duggal pdf free download
The primary Punjabi grammar guide by Narinder Singh Duggal is titled (also published as " CBSE Punjabi Vyakaran Ate Likhat Rachna If you are looking for a PDF version