ВАЛЕНТНОСТЬ ХИМИЧЕСКИХ ЭЛЕМЕНТОВ

object(ArrayObject)#850 (1) {
  ["storage":"ArrayObject":private] => array(6) {
    ["title"] => string(65) ""Валентность химических элементов" "
    ["seo_title"] => string(38) "valientnost-khimichieskikh-eliemientov"
    ["file_id"] => string(6) "162598"
    ["category_seo"] => string(6) "himiya"
    ["subcategory_seo"] => string(5) "uroki"
    ["date"] => string(10) "1422373165"
  }
}

object(ArrayObject)#872 (1) {
  ["storage":"ArrayObject":private] => array(6) {
    ["title"] => string(175) "Валентность химических элементов. Определение валентности элементов по формуле их соединений."
    ["seo_title"] => string(80) "valentnost_khimicheskikh_elementov_opredelenie_valentnosti_elementov_po_formule_"
    ["file_id"] => string(6) "564684"
    ["category_seo"] => string(6) "himiya"
    ["subcategory_seo"] => string(11) "presentacii"
    ["date"] => string(10) "1606507833"
  }
}

object(ArrayObject)#850 (1) {
  ["storage":"ArrayObject":private] => array(6) {
    ["title"] => string(119) "Технологическая карта урока «Валентность химических элементов»"
    ["seo_title"] => string(65) "tekhnologicheskaia_karta_uroka_valentnost_khimicheskikh_elementov"
    ["file_id"] => string(6) "638969"
    ["category_seo"] => string(6) "himiya"
    ["subcategory_seo"] => string(5) "uroki"
    ["date"] => string(10) "1698587206"
  }
}

object(ArrayObject)#872 (1) {
  ["storage":"ArrayObject":private] => array(6) {
    ["title"] => string(22) "Валентность"
    ["seo_title"] => string(11) "valientnost"
    ["file_id"] => string(6) "289839"
    ["category_seo"] => string(6) "himiya"
    ["subcategory_seo"] => string(5) "uroki"
    ["date"] => string(10) "1454864753"
  }
}

object(ArrayObject)#850 (1) {
  ["storage":"ArrayObject":private] => array(6) {
    ["title"] => string(122) "Контрольная работа по химии на тему: Вещество. Химический элемент. "
    ["seo_title"] => string(76) "kontrol-naia-rabota-po-khimii-na-tiemu-vieshchiestvo-khimichieskii-eliemient"
    ["file_id"] => string(6) "239376"
    ["category_seo"] => string(6) "himiya"
    ["subcategory_seo"] => string(7) "prochee"
    ["date"] => string(10) "1444761916"
  }
}