Your institution may have access to this item. Find your institution then sign in to continue.
Title
Feeding effect of the needles of Scots pine unfavourable to the sawfly Diprion pini L. (Hym., Diprionidae) on the development of two lepidoptera Thaumetopoea pityocampa Schiff. (Lep., Thaumetopoeidae) and Graellsia isabellae Grael