TY - RPRT TI - Aeromagnetic map of the Belvidere quadrangle, New Jersey and Pennsylvania AU - G. R. Boynton AU - D.R. Pittillo AU - G. L. Zandle PY - 1966 DO - 10.3133/gp550 UR - https://pubs.usgs.gov/publication/gp550 ID - gp550 ER -