Bhatnagar, H.P. and Talwar, K.K. 1978. Photoperiodic Response of Growth of <I>Pinus caribaea</I> Seedlings: I Effect on Stem Height and Diameter and Tracheid Characters. Indian Forester. 104, 3 (Mar. 1978), 212–226. DOI:https://doi.org/10.36808/if/1978/v104i3/11438.