Citation: Gl. Pierce et al., Effects of soil calcium and pH on seed germination and subsequent growth of large crabgrass (Digitaria sanguinalis), WEED TECH, 13(2), 1999, pp. 421-424
Citation: Kj. Mcinnis et al., Comparison of cardiopulmonary responses in obese women using ramp versus step treadmill protocols, AM J CARD, 83(2), 1999, pp. 289