trishnakunwar2 trishnakunwar2 10-12-2020 Health contestada पूर्वबाल्यावस्थाको बोलीको विकासलाई प्रभाव पार्ने तत्त्वहरू उल्लेख गर्नुहोस् ।Mention the factors affecting the speech development of early childhood.