TY - RPRT TI - Selection for egg shell strength in laying hens using shell membrane characteristics. AU - K Johansson AU - J Orberg AU - A B Carlgren AU - M Wilhelmson PY - 1996 DO - 10.1080/00071669608417905 UR - https://pubmed.ncbi.nlm.nih.gov/8894220/ ID - 8894220 ER -